GUIDE TO

THE G.R. BROOKS ARCHIVE

IN THE POWERHOUSE MUSEUM

Helen Yoxall 1998 CONTENTS

Biographical Note

Series List

Series Descriptions and Item Lists COLLECTED ARCHIVES BIOGRAPHICAL NOTE

Registration Number: 97/203/1

Creator: Brooks, George Roderick

Born on 19 June 1917, George Roderick Brooks is an engineer who worked on the design, construction and implementation of first generation technology at the Adolph Basser Computer Laboratory, School of Physics, during the 1950s-60s. He now (1997) lives at Leura, New South Wales.

Explanatory note re SILLIAC computer SILLIAC was the second stored program electronic computer to be built in Australia and one of the earliest in the world.

The SILLIAC computer is one of a family of machines sharing the same principles of system design, of logical interconnections and of circuit design. These were formulated by the staff of the Electronic Computer Project at the Institute for Advanced Study, Princeton, N.J. The system design was based on a specification issued by Burles, Goldstine and von Neumann in 1946 whilst the principles guiding the internal design of circuits & logical nets were the responsibility of J.H. Bigelow.

The first working machine of the Princeton type was completed by the staff of the Engineering Research Laboratory at the University of Illinois in November 1951. This was the ORDVAC computer, a machine ordered by the Ordnance Department for the Ballistic Research Laboratories of Aberdeen Proving Ground. The terms of the contract required that the machine be supplied complete with drawings, programs and handbooks and permitted the construction of a duplicate machine to become the property of the University. This policy enabled the continuation of computer development at Illinois and the second machine, ILLIAC [Illinois Automatic Computer], was completed in September 1952.

The computer project at Sydney University was initiated by Professor H[arry]. Messel, Head of the School of Physics in 1954. By that time ILLIAC had proved to be both a fast and reliable computer and it was selected on the grounds of performance and price. The funds for the purchase of drawings and programs and for study at Illinois were donated to the School by Dr Adolph Basser CBE. His name has been perpetuated in the name of the computing department within the School of Physics and the name SILLIAC was compounded from SYDNEY and ILLIAC in appreciation of the assistance afforded the School by the digital computer laboratory at the University of Illinois.

The construction of SILLIAC began in Sydney in 1955 under the control of B.E. Swire. Computing for production purposes began in July 1956 and error-free periods of six hours duration were common in December of that year, largely as a result of redesigning the input circuits used for ILLIAC I. A policy of circuit improvement without interrupting the scheduled operation was followed."

SILLIAC had 1024 40 bit words of random access memory constructed from electrostatic William's tubes and used vacuum tube logic in a basic . It consumed 50 kilowatts of power.

Silliac communicated with users via standard 5-channel punched paper tape at an input rate of 200 characters/sec and output at 60/sec. By 1956 standard 5-channel paper tape readers, punches and off line printers were readily available.

All the work on SILLIAC pre-assembly modules was carried out at Alexandria by a special team from Standard Telephones and Cables Pty. Ltd. (STC): Power systems, valves, circuits, electronics and frame-making. The pre-assemblies were then taken to the Physics Department and installed.

Some SILLIAC components were imported from the UK. The paper tape equipment was designed and manufactured by Creed & Co. Ltd., Brighton, England. Registration Number: 97/203/1

Creator: Brooks, George Roderick

The Basser Computing Laboratory (within the Department of Physics) provided computer services to the University and became the first computing laboratory for research and teaching in Australia.

SILLIAC was decommissioned in May 1968. It was dismantled and parts offered to anybody who was interested. (The museum holds various components of the computer at 85/1695, 94/137/1, 96/263/1, 96/394/1 and 97/231/2.)

Explanatory note re KDF-9 computer "In 1962, with a donation from Dr and Mrs Cecil Green of Texas, and the support of an AUC grant and a gift from the manufacturers, the Department of Physics acquired an English Electric KDF-9 computer. This transistorised computer provided initially 8k of 48 bit core memory (soon expanded to 32k) and had a very fast and sophisticated instruction execution within a stack machine architecture." (Basser 1997 Handbook)

References: Object files for 97/203/1, 94/137/1 and 96/394/1 Document, handwritten, 'SILLIAC Computer - Engineering Manual/Chap 1 - Introduction', 1950s (97/203/1-3/24) Basser 1997 Handbook - History of the Department at http://www.cs.su.oz.au/Handbook/hb.3.history.html

Helen Yoxall, Archives Manager, 1997 COLLECTED ARCHIVES SERIES LIST

Creator: Brooks, George Roderick

Reg. Number Series Title Date

97/203/1-1 Folder of diagrams of SILLIAC computer 1952-61, 1970

97/203/1-2 Microfilm copies of diagrams of SILLIAC computer 1950-1963

97/203/1-3 SILLIAC manuals 1957-67

97/203/1-4 SILLIAC log books 1957-1959

97/203/1-5 SILLIAC magnetic store development log 1959-1962

97/203/1-6 Files re construction and maintenance of SILLIAC 1932, 1948-1965 computer

97/203/1-7 University of Illinois publications re ILLIAC 1952-1961

97/203/1-8 Folders of diagrams of computers 1962-68 COLLECTED ARCHIVES SERIES DESCRIPTION

Registration Number: 97/203/1-1

Creators: Brooks, George Roderick

Series Title: Folder of diagrams of SILLIAC computer

Date Range: 1952-61, 1970

Physical Characteristics: Folder, 405mm x 600mm, bound in gold-lettered maroon cloth containing 15 dyeline prints mounted on guards. Loose in the folder are diagrams, duplicated typescript documents, manuscript notes and a printed article.

Description: Folder of diagrams of SILLIAC computer, paper/cardboard/cloth, Basser Computing Department, School of Physics, University of Sydney, Sydney, 1952-61, 1970

17 dyeline prints of logical diagrams of the SILLIAC computer contained in a large folder. The folder, 405mm x 600mm, is bound in maroon cloth. On the front cover in gold lettering 'LOGICAL DIAGRAMS - SILLIAC COMPUTER/BASSER COMPUTING DEPARTMENT/ SCHOOL OF PHYSICS UNIVERSITY OF SYDNEY'. 15 diagrams, 1954-61, are mounted on guards within the folder. Loose in the folder are two diagrams, 1952 and n.d., a duplicated typescript 'Alphabetical index of drawings', n.d., manuscript notes and diagrams by G.R. Brooks, n.d., a duplicated typescript document 'The Miller Effect, the Miller Integrator and related circuits', n.d., a block diagram of Illiac, 1956 and Robert M. May's article 'Sydney University School of Physics' from the "Australian Physicist", June 1970.

Arrangement: By diagram number

Dimensions: Shelf Length 0.020 m

Box Number: Plan cabinet COLLECTED ARCHIVES SERIES DESCRIPTION

Registration Number: 97/203/1-2

Creators: Brooks, George Roderick

Series Title: Microfilm copies of diagrams of SILLIAC computer

Date Range: 1950-1963

Physical Characteristics: A clear plastic box containing 135 aperture cards bearing 35mm microfilm copies of diagrams.

Description: Microfilm copies (135) of diagrams of SILLIAC computer, film/cardboard/plastic, Basser Computing Department, School of Physics, University of Sydney, Sydney, 1950-63

A clear plastic box containing 135 aperture cards bearing 35mm microfilm copies of diagrams of the SILLIAC computer. Each card has the diagram number and the date '18/11/63'inscribed on it.

Arrangement: By diagram number

Dimensions: Shelf Length 0.038 m

Box Number: Box 1 COLLECTED ARCHIVES ITEM LIST

Series Title: Microfilm copies of diagrams of SILLIAC computer

Item Number Item Title Box

97/203/1-2/1 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-006 Address generator - Silliac', 1954, with revisions to 1956

97/203/1-2/2 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-007 Store pulse logic', 1954

97/203/1-2/3 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-008 Input output logic', 1956 with revisions to 1959

97/203/1-2/4 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-009 Out control - Silliac', 1954 with revisions to 1959

97/203/1-2/5 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-010 Input control', 1954 with revisions to 1959

97/203/1-2/6 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-011 Output switch - Silliac', 1954 with revisions to 1958

97/203/1-2/7 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-012 D.C. distribution - Silliac', 1954 with revisions to 1959

97/203/1-2/8 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-013 Engineering control panel', 1955 with revisions to 1958

97/203/1-2/9 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-015 D.C. - supply transient detector', 1955 with revisions to 1960

97/203/1-2/10 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-016 BRPE punch control', 1957 with revisions to 1959

97/203/1-2/11 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-017 Power controls', 1958 with revisions to 1962

97/203/1-2/12 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-019 Tester for 2C51 valves', 1963

97/203/1-2/13 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-020 Tester for computer triodes', 1963 Item Number Item Title Box

97/203/1-2/14 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SS-022 Slave tube connections', 1962

97/203/1-2/15 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-023 'A' scope AMP. & sweep CCT.MkII', 1963

97/203/1-2/16 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-024 300V 200MA regulated power supply', 1955 with revisions to 1958

97/203/1-2/17 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-025 100-150V 200MA regulated power supply', 1955 with revisions to 1958

97/203/1-2/18 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-027 Reg. side chassis locations & filament wiring layout', 1963

97/203/1-2/19 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-028 Adder side chassis locations & filament wiring layout', 1962

97/203/1-2/20 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-029 Filament circuits', 1955 with revisions to 1962

97/203/1-2/21 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-030 Ferranti photoelectric tape reader', 1955 redrawn 1956

97/203/1-2/22 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-031 High Speed comparer - reperferator logic', 1960

97/203/1-2/23 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-032 High Speed comparer & reperferator circuit pt 1', 1957 with revisions to 1958

97/203/1-2/24 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-033 High Speed comparer & reperferator circuit pt 2', 1957 with revisions to 1958

97/203/1-2/25 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-034 High Speed comparer & reperferator circuit pt 3', 1957 with revisions to 1959

97/203/1-2/26 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SS-035 54/N4 & 6S/5M Control', 1956

97/203/1-2/27 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SS-036 Gate driver R1', 1956

97/203/1-2/28 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-037 Model 28 printer wiring', 1956 Item Number Item Title Box

97/203/1-2/29 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SS-038 BRPE punch wiring', 1956

97/203/1-2/30 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SS-039 Teletype transmitter wiring', 1956

97/203/1-2/31 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SS-040 Murray keyboard punch circuit', 1956 with revisions to 1958

97/203/1-2/32 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-041 Creed Comparator wiring', 1956

97/203/1-2/33 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-043 High speed comparer & reperforator circuit pt.4', 1956

97/203/1-2/34 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-044 Photoelectric reader tester - logic', 1957 with revisions to 1959

97/203/1-2/35 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-046 End connections - JA & JB', 1957 with revisions to 1959

97/203/1-2/36 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-047 End connections - JC & JD', 1957 with revisions to 1959

97/203/1-2/37 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-048 End connections - JE & JF', 1957

97/203/1-2/38 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-049 End connections - JG & JH', 1958

97/203/1-2/39 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-050 Register logic - part 2', 1957

97/203/1-2/40 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-051 SILLIAC decoding logic', 1957 with revisions to 1959

97/203/1-2/41 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-052 Decoding chassis', 1958 with revisions to 1959

97/203/1-2/42 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-053 Shift sequencing chassis', 1958 with revisions to 1959

97/203/1-2/43 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-054 Register logic - part one', 1957

97/203/1-2/44 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-055 Even address gate chassis', 1958 Item Number Item Title Box

97/203/1-2/45 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-056 Address modification chassis', 1958, with revisions to 1962

97/203/1-2/46 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-057 Selector chassis', 1958

97/203/1-2/47 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-058 Complement selector drivers', 1958

97/203/1-2/48 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-060 Record driver', 1959

97/203/1-2/49 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-061 Arithmetic control logic', 1958 with revisions to 1960

97/203/1-2/50 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-062 2000V., 200 MA. power supply', 1958 with revisions to 1962

97/203/1-2/51 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-063 Address code followers', 1958

97/203/1-2/52 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-064 Adder 2/0-2/9', 1958 with revisions to 1959

97/203/1-2/53 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-065 Standard adder chassis', 1958 with revisions to 1959

97/203/1-2/54 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-066 Adder 2/30 - 2/39', 1958 with revisions to 1959

97/203/1-2/55 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-067 Tape buffer - 2/0 - 2/9', 1958

97/203/1-2/56 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-068 Tape buffer - 2/10 - 2/19', 1958

97/203/1-2/57 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-069 Tape buffer - 2/20 - 2/29', 1958

97/203/1-2/58 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-070 Tape buffer - 2/30 - 2/39', 1958

97/203/1-2/59 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-071 Shift counter', 1958

97/203/1-2/60 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-072 Record control', 1959, with revisions to 1962 Item Number Item Title Box

97/203/1-2/61 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-073 Power supplies - comparer reperforator', 1958, with revisions to 1961

97/203/1-2/62 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SS-074 AC wiring - comparer reperf'r', 1958

97/203/1-2/63 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-075 Main power supplies', 1958

97/203/1-2/64 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-076 Record coding', 1958

97/203/1-2/65 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-077 Playback decoding', 1958, with revisions to 1962

97/203/1-2/66 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-078 Clear reformers', 1958

97/203/1-2/67 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-079 Tape buffer logic', 1958

97/203/1-2/68 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-081 Tape character counter', 1958

97/203/1-2/69 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-082 Search decoding', 1958, revised 1959

97/203/1-2/70 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-084 Seven channel P/R system', 1959

97/203/1-2/71 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-085 Search address register & counter', 1959

97/203/1-2/72 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-086 Search pulsers, clears & gates', 1959, with revisions to 1960

97/203/1-2/73 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-087 Search control', 1959, with revisions to 1962

97/203/1-2/74 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-088 P/R pulsers', 1959

97/203/1-2/75 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SS-091 Mag. tape eng. control panel', 1959

97/203/1-2/76 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-092 P/R central control', 1959 with revisions to 1962 Item Number Item Title Box

97/203/1-2/77 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-094 Playback control', 1959, with revisions to 1962

97/203/1-2/78 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-096 Logic for Aplin reader I', 1959

97/203/1-2/79 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-097 Aplin reader circuit', 1959

97/203/1-2/80 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-098 Auxiliary reader control', 1959

97/203/1-2/81 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-099 Dispatch counter', 1951, redrawn 1959

97/203/1-2/82 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-100 Amplifier & Williams tube control', 1952, redrawn 1959

97/203/1-2/83 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-101 Power supply for address generator', 1952, redrawn 1960

97/203/1-2/84 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-102 Electrodata transport circuit', 1960 with revisions to 1962

97/203/1-2/85 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-103 Store pulse drivers', 1952, redrawn 1959

97/203/1-2/86 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-107 Green gate chassis', 1950, redrawn 1959

97/203/1-2/87 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-108 Complement selector', 1950, redrawn 1959

97/203/1-2/88 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-109 Carry delay', 1950, redrawn 1959

97/203/1-2/89 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-110 Even order gate chassis', 1954, redrawn 1959

97/203/1-2/90 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-111 Focus & intensity control', 1953, redrawn 1959

97/203/1-2/91 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-112 Store pulsers', 1952, redrawn 1959 Item Number Item Title Box

97/203/1-2/92 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-113 Clock, regulator & toggle set pulser', 1952, redrawn 1959

97/203/1-2/93 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-114 Register selection chassis', 1952, redrawn 1959

97/203/1-2/94 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-115 Stores synchronisation chassis', 1952, redrawn 1959

97/203/1-2/95 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-116 Arithmetic stop chassis', 1951, redrawn 1959

97/203/1-2/96 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-117 Store power panel', 1952, redrawn 1959

97/203/1-2/97 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SS-118 Clear driver', 1950, redrawn 1959

97/203/1-2/98 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SS-119 6AS7G cath. fol. + 240V supply', 1950, redrawn 1959

97/203/1-2/99 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SS-120 Clear driver driver RI', 1950, redrawn 1959

97/203/1-2/100 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SS-121 Gate driver RII', 1953, redrawn 1959

97/203/1-2/101 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SS-121 Gate driver RII', 1953, redrawn 1959

97/203/1-2/102 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SS-123 Clear dr. dr. RIII', 1950, redrawn 1959

97/203/1-2/103 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SS-124 Gate driver RIII', 1951, redrawn 1959

97/203/1-2/104 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SS-125 SILLIAC loudspeaker chassis', 1953, redrawn 1959

97/203/1-2/105 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-126 Photoelectric tape reader output chassis', 1954, redrawn 1959 Item Number Item Title Box

97/203/1-2/106 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-127 RI register', 1951, redrawn 1959

97/203/1-2/107 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-128 RII register', 1951, redrawn 1959

97/203/1-2/108 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-129 RIII register 2/0 to 2/-9', 1962

97/203/1-2/109 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-130 RIII register 2/-10 to 2/-19', 1962

97/203/1-2/110 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-131 RIII register 2/-20 to 2/-29', 1962

97/203/1-2/111 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-132 RIII register 2/-30 to 2/-39', 1962

97/203/1-2/112 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-133 Odd order gate chassis', 1953, redrawn 1960

97/203/1-2/113 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-134 Odd address gate chassis', 1954, redrawn 1960

97/203/1-2/114 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-135 Control switch panel', 1960

97/203/1-2/115 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-136 Proposed keyboard layout', 1960, altered 1961

97/203/1-2/116 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-137 P/R control logic', 1960, revised 1962

97/203/1-2/117 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-138 Search logic', 1960, revised 1962

97/203/1-2/118 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-139 Tape character counter logic', 1960

97/203/1-2/119 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-140 Store control', 1961

97/203/1-2/120 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-142 Tape transport selections', 1961

97/203/1-2/121 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-143 Selector driver', 1961

97/203/1-2/122 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-144 Playback - record amplifier Mk2', 1961, with revisions to 1962 Item Number Item Title Box

97/203/1-2/123 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SS-145 P/R common chassis', 1961

97/203/1-2/124 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-146 SILLIAC power supply monitor', 1961

97/203/1-2/125 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-147 Magnetic tape power circuits', 1961, altered 1962

97/203/1-2/126 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-148 Tape transport wiring', 1961, with revisions to 1963

97/203/1-2/127 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SL-149 Tape selection & P/R coding logic', 1961

97/203/1-2/128 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-150 Playback error detection chassis', 1962

97/203/1-2/129 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-151 Physics teleprinter terminal', 1962

97/203/1-2/130 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SS-152 Remote teleprinter terminal', 1962

97/203/1-2/131 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SS-153 Overhead links - SILLIAC to M.T.', 1962

97/203/1-2/132 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SM-154 Outputs from tape buffer', 1963

97/203/1-2/133 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SS-155 2C51 valve characteristics curves', 1962

97/203/1-2/134 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SS-156 E182CC valve characteristics curves', 1962

97/203/1-2/135 Aperture card, containing microfilm copy of diagram of Box 1 SILLIAC computer, 'SS-157 Arithmetic control', 1963 COLLECTED ARCHIVES SERIES DESCRIPTION

Registration Number: 97/203/1-3

Creators: Brooks, George Roderick

Series Title: SILLIAC manuals

Date Range: 1957-67

Physical Characteristics: A duplicated typescript volume; groups of duplicated typescript quarto pages stapled together; a computer printout; and a manuscript document.

Description: Manuals (24) for SILLIAC computer, Basser Computing Laboratory, School of Physics, University of Sydney, Sydney, 1957-67

Duplicated typescript manuals (consisting of a volume "SILLIAC programming manual" and separate documents dealing with individual routines, checks, etc) and the handwritten draft of chapter 1 of the "SILLIAC computer - Engineering manual".

Arrangement: None apparent

Dimensions: Shelf Length 0.060 m

Box Number: Box 1 COLLECTED ARCHIVES ITEM LIST

Series Title: SILLIAC manuals

Item Number Item Title Box

97/203/1-3/1 Manual, duplicated typescript, 'SILLIAC programming Box 1 manual', 2nd edition, Adolph Basser Computing Laboratory, School of Physics, University of Sydney, Sydney, January 1959

97/203/1-3/2 Extract from manual, duplicated typescript, 'SILLIAC Box 1 programming manual', 2nd edition, Adolph Basser Computing Laboratory, School of Physics, University of Sydney, Sydney, January 1959, pages 1-1 to 2-20 only

97/203/1-3/3 Document, duplicated typescript, 'Post Mortem Version of the Box 1 D.O.I. Illinois code C1, SILLIAC code C1', Adolph Basser Computing Laboratory, School of Physics, University of Sydney, Sydney, 1950s

97/203/1-3/4 Document, duplicated typescript, 'Post Mortem Version of the Box 1 Sum Checking D.O.I., X2, Illinois code C2', Adolph Basser Computing Laboratory, School of Physics, University of Sydney, Sydney, March 1957

97/203/1-3/5 Document, duplicated typescript, 'Print Sets of Order Pairs Box 1 and Their Locations, Illinois code C5 (103), SILLIAC code C5', Adolph Basser Computing Laboratory, School of Physics, University of Sydney, Sydney, 1950s

97/203/1-3/6 Computer printout, 'Post Mortem Routine C5', Adolph Basser Box 1 Computing Laboratory, School of Physics, University of Sydney, Sydney, 1950s

97/203/1-3/7 Computer printout, 'Shift Test Print Out', Adolph Basser Box 1 Computing Laboratory, School of Physics, University of Sydney, Sydney, 1950sting Laboratory, School of Physics, University of Sydney, Sydney, 1950s

97/203/1-3/8 Document, duplicated typescript, 'Transfer-search SILLIAC Box 1 Code C7', Adolph Basser Computing Laboratory, School of Physics, University of Sydney, Sydney, December 1957

97/203/1-3/9 Document, duplicated typescript, 'Transfer-search SILLIAC Box 1 Code C7', Adolph Basser Computing Laboratory, School of Physics, University of Sydney, Sydney, December 1957

97/203/1-3/10 Document, duplicated typescript, 'Print Sets of Order Pairs in Box 1 Sexademical [sic] Form and their Locations, SILLIAC code C15', Adolph Basser Computing Laboratory, School of Physics, University of Sydney, Sydney, 1950s

97/203/1-3/11 Document, duplicated typescript, 'Print Headings Routine, Box 1 SILLIAC code P18', Adolph Basser Computing Laboratory, School of Physics, University of Sydney, Sydney, 27 February 1957 Item Number Item Title Box

97/203/1-3/12 Document, duplicated typescript, 'Sum Check, SILLIAC code Box 1 X11', Adolph Basser Computing Laboratory, School of Physics, University of Sydney, Sydney, 27 February 1957

97/203/1-3/13 Document, duplicated typescript, 'Program Interruption Box 1 Sexadecimal Dump, with Sum Check, SILLIAC code X21', Adolph Basser Computing Laboratory, School of Physics, University of Sydney, Sydney, June 1960

97/203/1-3/14 Document, duplicated typescript, 'Punch and Input Test - Eng. Box 1 2.6', Adolph Basser Computing Laboratory, School of Physics, University of Sydney, Sydney, 1950s

97/203/1-3/15 Document, duplicated typescript, 'Punch and Input Test - Eng. Box 1 2.6', Adolph Basser Computing Laboratory, School of Physics, University of Sydney, Sydney, 1950s

97/203/1-3/16 Document, duplicated typescript, 'Interpretive floating point Box 1 program, with simplified coding scheme, SILLIAC code A10', Adolph Basser Computing Laboratory, School of Physics, University of Sydney, Sydney, September 1959

97/203/1-3/17 Document, duplicated typescript, 'Bounder - Eng. 2.11', Adolph Box 1 Basser Computing Laboratory, School of Physics, University of Sydney, Sydney, 1950s

97/203/1-3/18 Document, duplicated typescript, 'R.A.R. Test to 300 - Eng. Box 1 2.14', Adolph Basser Computing Laboratory, School of Physics, University of Sydney, Sydney, August 1960

97/203/1-3/19 Document, duplicated typescript, 'Sexadecimal Post-Mortem - Box 1 Eng. 3:4', Adolph Basser Computing Laboratory, School of Physics, University of Sydney, Sydney, 1950s

97/203/1-3/20 Document, duplicated typescript, 'Red Dump Layout - Eng. Box 1 3:8', Adolph Basser Computing Laboratory, School of Physics, University of Sydney, Sydney, 1950s

97/203/1-3/21 Document, duplicated typescript, 'Red Dump Layout - Eng. Box 1 3:8', Adolph Basser Computing Laboratory, School of Physics, University of Sydney, Sydney, 1950s

97/203/1-3/22 Document, duplicated typescript, 'Notes on Electronic Circuit Box 1 Analysis Program (ECAP), PN 125', Adolph Basser Computing Laboratory, School of Physics, University of Sydney, Sydney, 12 December 1967

97/203/1-3/23 Document, duplicated typescript, 'Data Structures, LN 183', Box 1 Adolph Basser Computing Laboratory, School of Physics, University of Sydney, Sydney, 1960s

97/203/1-3/24 Document, handwritten, 'SILLIAC Computer - Engineering Box 1 Manual/ Chap 1 - Introduction', Adolph Basser Computing Laboratory, School of Physics, University of Sydney, Sydney, 1950s COLLECTED ARCHIVES SERIES DESCRIPTION

Registration Number: 97/203/1-4

Creators: Brooks, George Roderick

Series Title: SILLIAC log books

Date Range: 1957-1959

Physical Characteristics: Log books 3 and 4 are pre-ruled exercise books, bound with grey paper boards with blue cloth spines, each 253mm x 210mm. Inscribed on front cover 'SILLIAC LOG BOOK/ No. 3" and "SILLIAC LOG BOOK/ No 4'. Log book 5 is a pre-ruled stationer's volume (a 'Ward Report Book' manufactured by W.C. Penfold & Co Pty Ltd), bound with grey paper boards with a red cloth spine. 327mm x 226mm. Label is inscribed "SILLIAC/ NUMBER 5'. All have manuscript entries in ink.

Description: Log books (3) for SILLIAC computer, paper/ cardboard, Basser Computing Department, School of Physics, University of Sydney, Sydney, 28 February 1957 - 8 July 1959

Handwritten log books numbers 3 to 5 recording the daily activities of the SILLIAC computer design and installation team. The logs give extensive details of modifications, corrections and repairs made to the machine. The log entries are on the right hand page. On the left hand page is the date and the 'leapfrog' details (time taken and number of errors).

Arrangement: Chronological

Dimensions: Shelf Length 0.050 m

Box Number: 1 COLLECTED ARCHIVES ITEM LIST

Series Title: SILLIAC log books

Item Number Item Title Box

97/203/1-4/1 SILLIAC log book no. 3, paper/ cardboard, Basser Computing 1 Department, School of Physics, University of Sydney, Sydney, 28 February - 23 August 1957

97/203/1-4/2 SILLIAC log book no. 4, paper/ cardboard, Basser Computing 1 Department, School of Physics, University of Sydney, Sydney, 26 August 1957 - 24 April 1958

97/203/1-4/3 SILLIAC log book no. 5, paper/ cardboard, Basser Computing 1 Department, School of Physics, University of Sydney, Sydney, 25 April 1958 - 8 July 1959 COLLECTED ARCHIVES SERIES DESCRIPTION

Registration Number: 97/203/1-5

Creators: Brooks, George Roderick

Series Title: SILLIAC magnetic store development log

Date Range: 1959-1962

Physical Characteristics: Pre-ruled stationer's volume (a 'Ward Report Book' manufactured by W.C. Penfold & Co Pty Ltd), bound with grey paper boards with red cloth spine, 327mm x 226mm. Label is inscribed 'Magnetic Tape Store No 1 To 24-4-62'. Manuscript entries in ink.

Description: Logbook, SILLIAC magnetic store development log, paper/ cardboard, Basser Computer Department, School of Physics, University of Sydney, Sydney, 1959-1962

This is a handwritten log of activities involved in the development of the magnetic tape store for the SILLIAC computer. The log gives extensive details of the checks and modifications made to the system. The log begins with a statement of the status quo as at July 1959 and continues to 24 April 1962. It is the first of an unknown number of logs.

Arrangement: Chronological

Dimensions: Shelf Length 0.015 m

Box Number: 1 COLLECTED ARCHIVES SERIES DESCRIPTION

Registration Number: 97/203/1-6

Creators: Brooks, George Roderick

Series Title: Files re construction and maintenance of SILLIAC computer

Date Range: 1932, 1948-1965

Physical Characteristics: Manilla folders containing manuscript, typescript and carbon typescript documents, dyeline diagrams, newscuttings and printed booklets.

Description: Files (4), re construction and maintenance of SILLIAC computer, paper/ cardboard, Basser Computing Laboratory, University of Sydney, Sydney, 1932-1965

Three files entitled 'Leapfrog', 'Store and Store Control' and 'Mechanical Engineering of Drums' and one untitled group of papers. The files contain notes, reports, interoffice memos, dyeline diagrams, newscuttings, reprints and booklets.

Arrangement: None apparent

Dimensions: Shelf Length 0.050 m

Box Number: 2 COLLECTED ARCHIVES ITEM LIST

Series Title: Files re construction and maintenance of SILLIAC computer

Item Number Item Title Box

97/203/1-6/1 File re SILLIAC computer, 'Leapfrog', paper/ cardboard, 2 Basser Computing Laboratory, University of Sydney, Sydney, 1932, 1953-1965. Contains i.a., an article by Paul R. Heyl 'An unrecogniszed property of the reversible pendulum', 1932 and a Bell Telephone System monograph 'Arithmetic processes for digital computers', 1954.

97/203/1-6/2 File re SILLIAC computer, 'Store and Store Control', paper/ 2 cardboard, Basser Computing Laboratory, University of Sydney, Sydney, 1948-1963. Contains i.a., reprints from the Institution of Electrical Engineers re storage systems, 1948-1952 and a SILLIAC installation report for 1962.

97/203/1-6/3 File re SILLIAC computer, 'Mechanical Engineering of Drums', 2 paper/ cardboard, Basser Computing Laboratory, University of Sydney, Sydney, 1952-1958. Contains i.a., two Ferranti Ltd diagrams 'General arrgt. of 10" magnetic wheel digital computer', 1952-55 and 'General arrangement magnetic drum type 1018 digital computer', 1957

97/203/1-6/4 File re SILLIAC computer maintenance, paper, Basser 2 Computing Laboratory, University of Sydney, Sydney, 1954 COLLECTED ARCHIVES SERIES DESCRIPTION

Registration Number: 97/203/1-7

Creators: Brooks, George Roderick

Series Title: University of Illinois publications re ILLIAC computers

Date Range: 1952-1961

Physical Characteristics: Two duplicated typescript volumes and a group of duplicated typescript quarto pages staples together.

Description: Publications (3) of University of Illinois re ILLIAC computers, paper/cardboard, Urbana, Illinois, 1952-1961 Two manuals for the original ILLIAC computer - 'University of Illinois Digital Computer Engineering Codes', 1952-54 and 'ILLIAC PROGRAMMING', 1954 - and a paper on 'The Design of a very high speed scientific computer' (that is, ILLIAC II) by D.B. Gillies, 1961.

Arrangement: Chronological

Dimensions: Shelf Length 0.050 m

Box Number: 2 COLLECTED ARCHIVES ITEM LIST

Series Title: University of Illinois publications re ILLIAC computers

Item Number Item Title Box

97/203/1-7/1 Manual, 'University of Illinois Digital Computer Engineering 2 Codes', paper/cardboard, [Urbana, Illinois], 1952-1954

97/203/1-7/2 Manual, 'ILLIAC PROGRAMMING: a Guide to the 2 Preparation of Problems for Solution by the University of Illinois Digital Computer', paper/cardboard, Urbana, Illinois, 1954

97/203/1-7/3 Document, 'The Design of a very high speed scientific 2 computer', paper, D.B. Gillies/ University of Illinois Graduate College Digital Computer Laboratory,[Urbana, Illinois], 1961 COLLECTED ARCHIVES SERIES DESCRIPTION

Registration Number: 97/203/1-8

Creators: Brooks, George Roderick

Series Title: Folders of diagrams of computers

Date Range: 1962-68

Physical Characteristics: Two post bound folders bound in blue cloth, 380mm x 530mm. First volume inscribed on white label on front cover 'MC FOLDER/ MC1, 2, AU, MC3'; second volume inscribed on white label on front cover 'BUST FOLDER/ MD, IOC, MS, BU.'

Description: Folders (2) of diagrams of computers, English Electric Co Ltd/ English Electric-Leo Marconi Computers Ltd/ Basser Computing Department, University of Sydney, United Kingdom/ Australia, 1962-1968

Two folders of dyelines of logical diagrams and circuit diagrams of computers including the KDF9 computer (believed to be one of the first transistor-operated computers installed in Australia). An index to the drawings appears in the front of each folder.

Arrangement: By 'CUB. NO.'

Dimensions: Shelf Length 0.060 m

Box Number: Plan cabinet COLLECTED ARCHIVES ITEM LIST

Series Title: Folders of diagrams of computers

Item Number Item Title Box

97/203/1-8/1 Folder of diagrams of computers, English Electric Co Ltd/ Plan English Electric-Leo Marconi Computers Ltd, England, cabinet 1962-1967. Post bound folder bound in blue cloth, 380mm x 530mm. Inscribed on white label on front cover 'MC FOLDER/ MC1, 2, AU, MC3'

97/203/1-8/2 Diagrams of computers, English Electric Co Ltd/ English Plan Electric-Leo Marconi Computers Ltd/Basser Computing cabinet Department, University of Sydney, United Kingdom/ Australia, 1964-1968. Post bound folder bound in blue cloth, 380mm x 530mm. Inscribed on white label on front cover 'BUST FOLDER/ MD, IOC, MS, BU.'