Computer Architecture: a Historical Perspective
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May 21St at the Time, the EDSAC Used IBM 726 Three Small Cathode Ray Tube Börje Langefors Screens to Display the State of Its Announced Memory
it played tic-tac-toe (known as Noughts and Crosses in the UK). May 21st At the time, the EDSAC used IBM 726 three small cathode ray tube Börje Langefors screens to display the state of its Announced memory. Each one could draw a May 21, 1952 Born: May 21, 1915; grid of 35 x 16 dots. Douglas re- purposed one of them for his Ystad, Sweden The IBM 726 was the company’s game, and obtained input (i.e. Died: Dec. 13, 2009 first magnetic tape unit, where to place a nought or intended for use with the Langefors developed the cross) via EDSAC’s rotary recently announced IBM 701 ‘infological equation’ in 1980, controller. [April 7], the company’s first which describes the difference electronic computer. between information and data in terms of additional semantic The 726 utilized half-inch tapes background and a with seven tracks. Six were for communication time interval. the data and the seventh was employed as a parity track. Langefors joined SAAB, the Some tapes were 1,200 feet long, Swedish aerospace and defense could store 2.3 MB of data, and company, in 1949 where he IBM claimed that just one could utilized analog devices for replace 12,500 punch cards. calculating wing stresses. The need for more powerful tools The drive could write 100 became evident, and the only characters per inch on a tape Swedish computer of the time, EDSAC CRT Tubes. Computer and read 75 inches per second. the BESK [April 1], was Lab, Univ. of Cambridge. CC BY To withstand the system’s fast insufficient for the task. -
Early Stored Program Computers
Stored Program Computers Thomas J. Bergin Computing History Museum American University 7/9/2012 1 Early Thoughts about Stored Programming • January 1944 Moore School team thinks of better ways to do things; leverages delay line memories from War research • September 1944 John von Neumann visits project – Goldstine’s meeting at Aberdeen Train Station • October 1944 Army extends the ENIAC contract research on EDVAC stored-program concept • Spring 1945 ENIAC working well • June 1945 First Draft of a Report on the EDVAC 7/9/2012 2 First Draft Report (June 1945) • John von Neumann prepares (?) a report on the EDVAC which identifies how the machine could be programmed (unfinished very rough draft) – academic: publish for the good of science – engineers: patents, patents, patents • von Neumann never repudiates the myth that he wrote it; most members of the ENIAC team contribute ideas; Goldstine note about “bashing” summer7/9/2012 letters together 3 • 1.0 Definitions – The considerations which follow deal with the structure of a very high speed automatic digital computing system, and in particular with its logical control…. – The instructions which govern this operation must be given to the device in absolutely exhaustive detail. They include all numerical information which is required to solve the problem…. – Once these instructions are given to the device, it must be be able to carry them out completely and without any need for further intelligent human intervention…. • 2.0 Main Subdivision of the System – First: since the device is a computor, it will have to perform the elementary operations of arithmetics…. – Second: the logical control of the device is the proper sequencing of its operations (by…a control organ. -
Technical Details of the Elliott 152 and 153
Appendix 1 Technical Details of the Elliott 152 and 153 Introduction The Elliott 152 computer was part of the Admiralty’s MRS5 (medium range system 5) naval gunnery project, described in Chap. 2. The Elliott 153 computer, also known as the D/F (direction-finding) computer, was built for GCHQ and the Admiralty as described in Chap. 3. The information in this appendix is intended to supplement the overall descriptions of the machines as given in Chaps. 2 and 3. A1.1 The Elliott 152 Work on the MRS5 contract at Borehamwood began in October 1946 and was essen- tially finished in 1950. Novel target-tracking radar was at the heart of the project, the radar being synchronized to the computer’s clock. In his enthusiasm for perfecting the radar technology, John Coales seems to have spent little time on what we would now call an overall systems design. When Harry Carpenter joined the staff of the Computing Division at Borehamwood on 1 January 1949, he recalls that nobody had yet defined the way in which the control program, running on the 152 computer, would interface with guns and radar. Furthermore, nobody yet appeared to be working on the computational algorithms necessary for three-dimensional trajectory predic- tion. As for the guns that the MRS5 system was intended to control, not even the basic ballistics parameters seemed to be known with any accuracy at Borehamwood [1, 2]. A1.1.1 Communication and Data-Rate The physical separation, between radar in the Borehamwood car park and digital computer in the laboratory, necessitated an interconnecting cable of about 150 m in length. -
An Early Program Proof by Alan Turing F
An Early Program Proof by Alan Turing F. L. MORRIS AND C. B. JONES The paper reproduces, with typographical corrections and comments, a 7 949 paper by Alan Turing that foreshadows much subsequent work in program proving. Categories and Subject Descriptors: 0.2.4 [Software Engineeringj- correctness proofs; F.3.1 [Logics and Meanings of Programs]-assertions; K.2 [History of Computing]-software General Terms: Verification Additional Key Words and Phrases: A. M. Turing Introduction The standard references for work on program proofs b) have been omitted in the commentary, and ten attribute the early statement of direction to John other identifiers are written incorrectly. It would ap- McCarthy (e.g., McCarthy 1963); the first workable pear to be worth correcting these errors and com- methods to Peter Naur (1966) and Robert Floyd menting on the proof from the viewpoint of subse- (1967); and the provision of more formal systems to quent work on program proofs. C. A. R. Hoare (1969) and Edsger Dijkstra (1976). The Turing delivered this paper in June 1949, at the early papers of some of the computing pioneers, how- inaugural conference of the EDSAC, the computer at ever, show an awareness of the need for proofs of Cambridge University built under the direction of program correctness and even present workable meth- Maurice V. Wilkes. Turing had been writing programs ods (e.g., Goldstine and von Neumann 1947; Turing for an electronic computer since the end of 1945-at 1949). first for the proposed ACE, the computer project at the The 1949 paper by Alan M. -
Law and Military Operations in Kosovo: 1999-2001, Lessons Learned For
LAW AND MILITARY OPERATIONS IN KOSOVO: 1999-2001 LESSONS LEARNED FOR JUDGE ADVOCATES Center for Law and Military Operations (CLAMO) The Judge Advocate General’s School United States Army Charlottesville, Virginia CENTER FOR LAW AND MILITARY OPERATIONS (CLAMO) Director COL David E. Graham Deputy Director LTC Stuart W. Risch Director, Domestic Operational Law (vacant) Director, Training & Support CPT Alton L. (Larry) Gwaltney, III Marine Representative Maj Cody M. Weston, USMC Advanced Operational Law Studies Fellows MAJ Keith E. Puls MAJ Daniel G. Jordan Automation Technician Mr. Ben R. Morgan Training Centers LTC Richard M. Whitaker Battle Command Training Program LTC James W. Herring Battle Command Training Program MAJ Phillip W. Jussell Battle Command Training Program CPT Michael L. Roberts Combat Maneuver Training Center MAJ Michael P. Ryan Joint Readiness Training Center CPT Peter R. Hayden Joint Readiness Training Center CPT Mark D. Matthews Joint Readiness Training Center SFC Michael A. Pascua Joint Readiness Training Center CPT Jonathan Howard National Training Center CPT Charles J. Kovats National Training Center Contact the Center The Center’s mission is to examine legal issues that arise during all phases of military operations and to devise training and resource strategies for addressing those issues. It seeks to fulfill this mission in five ways. First, it is the central repository within The Judge Advocate General's Corps for all-source data, information, memoranda, after-action materials and lessons learned pertaining to legal support to operations, foreign and domestic. Second, it supports judge advocates by analyzing all data and information, developing lessons learned across all military legal disciplines, and by disseminating these lessons learned and other operational information to the Army, Marine Corps, and Joint communities through publications, instruction, training, and databases accessible to operational forces, world-wide. -
Computer Organization & Architecture Eie
COMPUTER ORGANIZATION & ARCHITECTURE EIE 411 Course Lecturer: Engr Banji Adedayo. Reg COREN. The characteristics of different computers vary considerably from category to category. Computers for data processing activities have different features than those with scientific features. Even computers configured within the same application area have variations in design. Computer architecture is the science of integrating those components to achieve a level of functionality and performance. It is logical organization or designs of the hardware that make up the computer system. The internal organization of a digital system is defined by the sequence of micro operations it performs on the data stored in its registers. The internal structure of a MICRO-PROCESSOR is called its architecture and includes the number lay out and functionality of registers, memory cell, decoders, controllers and clocks. HISTORY OF COMPUTER HARDWARE The first use of the word ‘Computer’ was recorded in 1613, referring to a person who carried out calculation or computation. A brief History: Computer as we all know 2day had its beginning with 19th century English Mathematics Professor named Chales Babage. He designed the analytical engine and it was this design that the basic frame work of the computer of today are based on. 1st Generation 1937-1946 The first electronic digital computer was built by Dr John V. Atanasoff & Berry Cliford (ABC). In 1943 an electronic computer named colossus was built for military. 1946 – The first general purpose digital computer- the Electronic Numerical Integrator and computer (ENIAC) was built. This computer weighed 30 tons and had 18,000 vacuum tubes which were used for processing. -
IEEE Spectrum: 25 Microchip
IEEE Spectrum: 25 Microchips That Shook the World http://www.spectrum.ieee.org/print/8747 Sponsored By Select Font Size: A A A 25 Microchips That Shook the World By Brian R. Santo This is part of IEEE Spectrum 's Special Report: 25 Microchips That Shook the World . In microchip design, as in life, small things sometimes add up to big things. Dream up a clever microcircuit, get it sculpted in a sliver of silicon, and your little creation may unleash a technological revolution. It happened with the Intel 8088 microprocessor. And the Mostek MK4096 4-kilobit DRAM. And the Texas Instruments TMS32010 digital signal processor. Among the many great chips that have emerged from fabs during the half-century reign of the integrated circuit, a small group stands out. Their designs proved so cutting-edge, so out of the box, so ahead of their time, that we are left groping for more technology clichés to describe them. Suffice it to say that they gave us the technology that made our brief, otherwise tedious existence in this universe worth living. We’ve compiled here a list of 25 ICs that we think deserve the best spot on the mantelpiece of the house that Jack Kilby and Robert Noyce built. Some have become enduring objects of worship among the chiperati: the Signetics 555 timer, for example. Others, such as the Fairchild 741 operational amplifier, became textbook design examples. Some, like Microchip Technology’s PIC microcontrollers, have sold billions, and are still doing so. A precious few, like Toshiba’s flash memory, created whole new markets. -
Computer Development at the National Bureau of Standards
Computer Development at the National Bureau of Standards The first fully operational stored-program electronic individual computations could be performed at elec- computer in the United States was built at the National tronic speed, but the instructions (the program) that Bureau of Standards. The Standards Electronic drove these computations could not be modified and Automatic Computer (SEAC) [1] (Fig. 1.) began useful sequenced at the same electronic speed as the computa- computation in May 1950. The stored program was held tions. Other early computers in academia, government, in the machine’s internal memory where the machine and industry, such as Edvac, Ordvac, Illiac I, the Von itself could modify it for successive stages of a compu- Neumann IAS computer, and the IBM 701, would not tation. This made a dramatic increase in the power of begin productive operation until 1952. programming. In 1947, the U.S. Bureau of the Census, in coopera- Although originally intended as an “interim” com- tion with the Departments of the Army and Air Force, puter, SEAC had a productive life of 14 years, with a decided to contract with Eckert and Mauchly, who had profound effect on all U.S. Government computing, the developed the ENIAC, to create a computer that extension of the use of computers into previously would have an internally stored program which unknown applications, and the further development of could be run at electronic speeds. Because of a demon- computing machines in industry and academia. strated competence in designing electronic components, In earlier developments, the possibility of doing the National Bureau of Standards was asked to be electronic computation had been demonstrated by technical monitor of the contract that was issued, Atanasoff at Iowa State University in 1937. -
The History of Computers: Part II
The History Of Computers: Part II You will learn about the computers of the 20th century and the people behind those machines. Some of the clipart images come from the sites: •http://www.clipartheaven.com/ •http://www.horton-szar.net/ •http://www.shootpetoet.be •www.dpw.wau.nl/pv/temp/ clipart/screenbeans.htm James Tam Categories Of 20th Century Computers •The mechanical monsters of the twenty first century - The machines of Konrad Zuse - The Bell telephone models - Howard Aiken and the Harvard computers •The computers of the electronic revolution -The ABC -The ENIAC - The Colossus machines of Bletchley Park •The first modern (stored program/memory) computers - The Manchester machine -The EDSAC - The EDVAC James Tam Computer History: Part II 1 The Mechanical Monsters •Performed calculations using moving mechanical parts rather than using electronics Images from the History of Computing Technology by Michael R. Williams James Tam The Mechanical Monsters •Many were used to solve equations that were either impossible or very time consuming to solve analytically. •Often conducting experiments were also impractical. James Tam Computer History: Part II 2 The Mechanical Monsters •Konrad Zuse -Z1 –Z4 •George Stibitz - Bell relay based computers Model I - VI •Howard Aiken - Harvard Mark I - IV James Tam The First Set Of Mechanical Monsters Were Created By Konrad Zuse •Developed a series of mechanical calculating machines (Z1, Z2, Z3, Z4). •Motivated by the need to perform complex calculations because current approaches were unsatisfactory. James Tam Computer History: Part II 3 The Z1 •It was entirely mechanical From the History of Computing Technology by Michael R. -
MOSTEK 1980 CIRCUITS and SYSTEMS PRODUCT GUIDE Mostek Reserves the Right to Make Changes in Specifications at Any Time and Without Notice
MOSTEK 1980 CIRCUITS AND SYSTEMS PRODUCT GUIDE Mostek reserves the right to make changes in specifications at any time and without notice. The information furnished by Mostek in this publication is believedto be accurate and reliable. However, no responsibility is assumed by Mostek for its use; nor for any infringements of patents or other rights of third parties resulting from its use. No license is granted under any patents or patent rights of Mostek. The "PRELIMINARY" designation on a Mostek data sheet indicates that the product is not characterized. The specifications are subject to change, are based on design goals or preliminary part evaluation, and are not guaranteed. Mostek Corporation or an authorized sales representative should be consulted for current information before using this product. No responsibility is assumed by Mostek for its use; nor for any infringements of patents and trademarks or other rights ofthird parties resulting from its use. No license is granted under any patents, patent rights, or trademarks of Mostek. Mostek reserves the right to make changes in specifications at anytime and without notice. PRINTED IN USA April 1980 Publication Number Trade Marks Registered® STD No 01009 Copyright © 1980 Mostek Corporation (All rights reserved) II ~~~~~~~;;;;' Table of Contents '~~~~~~;;;;; Table of Contents ................................................... 111 Numerical Index ...................................................VIII Alphabetical Index . ................................................. x Mostek Profile -
Microprocessors in the 1970'S
Part II 1970's -- The Altair/Apple Era. 3/1 3/2 Part II 1970’s -- The Altair/Apple era Figure 3.1: A graphical history of personal computers in the 1970’s, the MITS Altair and Apple Computer era. Microprocessors in the 1970’s 3/3 Figure 3.2: Andrew S. Grove, Robert N. Noyce and Gordon E. Moore. Figure 3.3: Marcian E. “Ted” Hoff. Photographs are courtesy of Intel Corporation. 3/4 Part II 1970’s -- The Altair/Apple era Figure 3.4: The Intel MCS-4 (Micro Computer System 4) basic system. Figure 3.5: A photomicrograph of the Intel 4004 microprocessor. Photographs are courtesy of Intel Corporation. Chapter 3 Microprocessors in the 1970's The creation of the transistor in 1947 and the development of the integrated circuit in 1958/59, is the technology that formed the basis for the microprocessor. Initially the technology only enabled a restricted number of components on a single chip. However this changed significantly in the following years. The technology evolved from Small Scale Integration (SSI) in the early 1960's to Medium Scale Integration (MSI) with a few hundred components in the mid 1960's. By the late 1960's LSI (Large Scale Integration) chips with thousands of components had occurred. This rapid increase in the number of components in an integrated circuit led to what became known as Moore’s Law. The concept of this law was described by Gordon Moore in an article entitled “Cramming More Components Onto Integrated Circuits” in the April 1965 issue of Electronics magazine [338]. -
Details Von Neumann/Turing Structure of Von Nuemann Machine
ENIAC - background 168 420 Computer Architecture ] Electronic Numerical Integrator And Computer ] Eckert and Mauchly Chapter 2 ] University of Pennsylvania Computer Evolution and ] Trajectory tables for weapons Performance ] Started 1943 ] Finished 1946 \ Too late for war effort ] Used until 1955 ENIAC - details ENIAC ] Decimal (not binary) ] 20 accumulators of 10 digits ] Programmed manually by switches ] 18,000 vacuum tubes ] 30 tons ] 15,000 square feet ] 140 kW power consumption ] 5,000 additions per second Structure of von Nuemann von Neumann/Turing machine ] Stored Program concept ] Main memory storing programs and data Arithmetic and Logic Unit ] ALU operating on binary data ] Control unit interpreting instructions from Input Output Main memory and executing Equipment Memory ] Input and output equipment operated by control unit ] Princeton Institute for Advanced Studies Program Control Unit \ IAS ] Completed 1952 1 IAS - details Structure of IAS - detail ] 1000 x 40 bit words Central Processing Unit Arithmetic and Logic Unit \ Binary number Accumulator MQ \ 2 x 20 bit instructions ] Set of registers (storage in CPU) Arithmetic & Logic Circuits \ Memory Buffer Register Input MBR Output Instructions \ Memory Address Register Main Equipment & Data \ Instruction Register Memory \ Instruction Buffer Register IBR PC MAR \ Program Counter IR Control \ Accumulator Circuits Address \ Multiplier Quotient Program Control Unit IAS Commercial Computers ] 1947 - Eckert-Mauchly Computer Corporation ] UNIVAC I (Universal Automatic Computer) ]