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How Many Bits Are in a Byte in Computer Terms
How Many Bits Are In A Byte In Computer Terms Periosteal and aluminum Dario memorizes her pigeonhole collieshangie count and nagging seductively. measurably.Auriculated and Pyromaniacal ferrous Gunter Jessie addict intersperse her glockenspiels nutritiously. glimpse rough-dries and outreddens Featured or two nibbles, gigabytes and videos, are the terms bits are in many byte computer, browse to gain comfort with a kilobyte est une unité de armazenamento de armazenamento de almacenamiento de dados digitais. Large denominations of computer memory are composed of bits, Terabyte, then a larger amount of nightmare can be accessed using an address of had given size at sensible cost of added complexity to access individual characters. The binary arithmetic with two sets render everything into one digit, in many bits are a byte computer, not used in detail. Supercomputers are its back and are in foreign languages are brainwashed into plain text. Understanding the Difference Between Bits and Bytes Lifewire. RAM, any sixteen distinct values can be represented with a nibble, I already love a Papst fan since my hybrid head amp. So in ham of transmitting or storing bits and bytes it takes times as much. Bytes and bits are the starting point hospital the computer world Find arrogant about the Base-2 and bit bytes the ASCII character set byte prefixes and binary math. Its size can vary depending on spark machine itself the computing language In most contexts a byte is futile to bits or 1 octet In 1956 this leaf was named by. Pages Bytes and Other Units of Measure Robelle. This function is used in conversion forms where we are one series two inputs. -
UNITED STATES SECURITIES and EXCHANGE COMMISSION Washington, D.C
Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2009 Commission File Number 001-00395 NCR CORPORATION (Exact name of registrant as specified in its charter) Maryland 31-0387920 (State or other jurisdiction of (I.R.S. Employer incorporation or organization) Identification No.) 3097 Satellite Boulevard Duluth, Georgia 30096 (Address of principal executive offices) (Zip Code) Registrant’s telephone number, including area code: (937) 445-5000 Securities registered pursuant to Section 12(b) of the Act: Title of each class Name of each exchange on which registered Common Stock, par value $.01 per share New York Stock Exchange Securities registered pursuant to Section 12(g) of the Act: None Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. YES x NO ¨ Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15 (d) of the Act. YES ¨ NO x Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15 (d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. YES x NO ¨ Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). -
315 Random-Sequential Computer System, 1960
IF RANDOM- SEQUENTIAL COMPUTER SYSTEM NCR provides a practical Price -Performance Ratio Price-Performance is the only accurate measure for evaluating computers. Transaction for transaction the NCR 315 does more work for less money. low-cost, high-performance is the cornerstone of design in the 315. keeps system price down The 315 keeps system cost down with a unique magnetic file system. requires fewer files. .reduces the cost of random type memory. The 315 keeps cost down through a high degree of expansibility. permits tailoring a system to your needs at the lowest possible cost. The 315 keeps cost down through efficient use of COBOL and other automatic coding techniques . .reduces overall programming costs. The 315 keeps cost down through an attractive lease arrangement and a low purchase price. keeps system performance up a The NCR 315 keeps system performance up through unmatched proc- essing flexibility.. permits each application to be processed in the most e5cient manner. The 315 keeps performance up through a high-speed internal operation, balanced by the proper combination of high-speed input-output units. The 315 keeps performance up through automatic program interrupt feature. keeps input-output units operating at maximum rate. re- sults in more efficient utilization of processor time. a The 315 keeps performance up through a powerful command structure . designed specifically for high-speed business data processing. Card Random Access Memory a unique magnetic file system CRAM, an NCR 315 exclusive, uses mylar magnetic cards for data storage. In effect, seven 14-inch strips of magnetic tape have been placed side by side to form the magnetic card. -
The Protection of Information in Computer Systems
The Protection of Information in Computer Systems JEROME H. SALTZER, SENIOR MEMBER, IEEE, AND MICHAEL D. SCHROEDER, MEMBER, IEEE Invited Paper Abstract - This tutorial paper explores the mechanics of Confinement protecting computer-stored information from unauthorized Allowing a borrowed program to have access to data, use or modification. It concentrates on those architectural while ensuring that the program cannot release the structures--whether hardware or software--that are information. necessary to support information protection. The paper Descriptor develops in three main sections. Section I describes A protected value which is (or leads to) the physical desired functions, design principles, and examples of address of some protected object. elementary protection and authentication mechanisms. Any Discretionary reader familiar with computers should find the first section (In contrast with nondiscretionary.) Controls on access to be reasonably accessible. Section II requires some to an object that may be changed by the creator of the familiarity with descriptor-based computer architecture. It object. examines in depth the principles of modern protection Domain architectures and the relation between capability systems The set of objects that currently may be directly and access control list systems, and ends with a brief accessed by a principal. analysis of protected subsystems and protected objects. Encipherment The reader who is dismayed by either the prerequisites or The (usually) reversible scrambling of data according the level of detail in the second section may wish to skip to to a secret transformation key, so as to make it safe for Section III, which reviews the state of the art and current transmission or storage in a physically unprotected research projects and provides suggestions for further environment. -
TCD-SCSS-T.20121208.032.Pdf
AccessionIndex: TCD-SCSS-T.20121208.032 Accession Date: 8-Dec-2012 Accession By: Prof.J.G.Byrne Object name: Burroughs 1714 Vintage: c.1972 Synopsis: Commercial zero-instruction-set computer used by the Dept.Computer Science from 1973-1979. Just two prototyping boards survive. Description: The Burroughs 1714 was one of their B1700 family, introduced in 1972 to compete with IBM's System/3. The original research for the B1700 series, initially codenamed the Proper Language Processor or Program Language Processor (PLP) was done at the Burroughs Pasadena plant. The family were known as the Burroughs Small Systems, as distinct from the Burroughs Medium Systems (B2000, etc) and the Burroughs Large Systems (B5000, etc). All the Burroughs machines had high-level language architectures. The large were ALGOL machines, the medium COBOL machines, but the small were universal machines. The principal designer of the B1700 family was Wayne T. Wilner. He designed the architecture as a zero-instruction-set computer, an attempt to bridge the inefficient semantic gap between the ideal solution to a particular programming problem and the real physical hardware. The B1700 architecture executed idealized virtual machines for any language from virtual memory. It achieved this feat by microprogramming, see the microinstruction set further below. The Burroughs MCP (Master Control Program) would schedule a particular job to run, then preload the interpreter for whatever language was required into a writeable control store, allowing the machine to emulate the desired virtual machine. The hardware was optimised for this. It had bit-addressable memory, a variable-width ALU, could OR in data from a register into the instruction register (for very efficient instruction parsing), and the output of the ALU was directly addressable as X+Y or X-Y read-only registers. -
Systems Architecture of the English Electric KDF9 Computer
Version 1, September 2009 CCS-N4X2 Systems Architecture of the English Electric KDF9 computer. This transistor-based machine was developed by an English Electric team under ACD Haley, of which the leading light was RH Allmark – (see section N4X5 for a full list of technical references). The KDF9 was remarkable because it is believed to be the first zero-address instruction format computer to have been announced (in 1960). It was first delivered at about the same time (early 1963) as the other famous zero-address computer, the Burroughs B5000 in America. A zero-address machine allows the use of Reverse Polish arithmetic; this offers certain advantages to compiler writers. It is believed that the attention of the English Electric team was first drawn to the zero-address concept through contact with George (General Order Generator), an autocode programming system written for a Deuce computer by the University of Sydney, Australia, in the latter half of the 1950s. George used Reversed Polish, and the KDF9 team was attracted to this convention for the pragmatic reason of wishing to enhance performance by minimising accesses to main store. This may be contrasted with the more theoretical line taken independently by Burroughs. To quote Bob Beard’s article in the autumn 1997 issue of Resurrection, the KDF9 had the following architectural features: Zero Address instruction format (a first?); Reverse Polish notation (for arithmetic operations); Stacks used for arithmetic operations and Flow Control (Jumps) and I/O using ferrite cores with a one microsecond cycle; Separate Arithmetic and Main Controls with instruction prefetch; Hardware Multiply and Divide occupying a complete cabinet with clock doubled; Separate I/O control; A word length of 48 bits, comprising six 8-bit 'syllables' (the precursor of the byte). -
Creativity – Success – Obscurity
Author Gerry Pickering CREATIVITY – SUCCESS – OBSCURITY UNIVAC, WHAT HAPPENED? A fellow retiree posed the question of what happened. How did the company that invented the computer snatch defeat from the jaws of victory? The question piqued my interest, thus I tried to draw on my 32 years of experiences in the company and the myriad of information available on the Internet to answer the question for myself and hopefully others that may still be interested 60+ years after the invention and delivery of the first computers. Computers plural, as there were more than one computer and more than one organization from which UNIVAC descended. J. Presper Eckert and John Mauchly, located in Philadelphia PA are credited with inventing the first general purpose computer under a contract with the U.S. Army. But our heritage also traces back to a second group of people in St. Paul MN who developed several computers about the same time under contract with the U.S. Navy. This is the story of how these two companies started separately, merged to become one company, how that merged company named UNIVAC (Universal Automatic Computers) grew to become a main rival of IBM (International Business Machines), then how UNIVAC was swallowed by another company to end up in near obscurity compared to IBM and a changing industry. Admittedly it is a biased story, as I observed the industry from my perspective as an employee of UNIVAC. It is also biased in that I personally observed only a fraction of the events as they unfolded within UNIVAC. This story concludes with a detailed account of my work assignments within UNIVAC. -
CLOSED SYLLABLES Short a 5-8 Short I 9-12 Mix: A, I 13 Short O 14-15 Mix: A, I, O 16-17 Short U 18-20 Short E 21-24 Y As a Vowel 25-26
DRILL BITS I INTRODUCTION Drill Bits Phonics-oriented word lists for teachers If you’re helping some- CAT and FAN, which they may one learn to read, you’re help- have memorized without ing them unlock the connection learning the sounds associated between the printed word and with the letters. the words we speak — the • Teach students that ex- “sound/symbol” connection. ceptions are also predictable, This book is a compila- and there are usually many ex- tion of lists of words which fol- amples of each kind of excep- low the predictable associa- tion. These are called special tions of letters, syllables and categories or special patterns. words to the sounds we use in speaking to each other. HOW THE LISTS ARE ORGANIZED This book does not at- tempt to be a reading program. Word lists are presented Recognizing words and pat- in the order they are taught in terns in sound/symbol associa- many structured, multisensory tions is just one part of read- language programs: ing, though a critical one. This Syllable type 1: Closed book is designed to be used as syllables — short vowel a reference so that you can: sounds (TIN, EX, SPLAT) • Meet individual needs Syllable type 2: Vowel- of students from a wide range consonant-e — long vowel of ages and backgrounds; VAT sounds (BAKE, DRIVE, SCRAPE) and TAX may be more appro- Syllable Type 3: Open priate examples of the short a syllables — long vowel sound sound for some students than (GO, TRI, CU) www.resourceroom.net BITS DRILL INTRODUCTION II Syllable Type 4: r-con- those which do not require the trolled syllables (HARD, PORCH, student to have picked up PERT) common patterns which have Syllable Type 5: conso- not been taught. -
Introduction to Computer Data Representation
Introduction to Computer Data Representation Peter Fenwick The University of Auckland (Retired) New Zealand Bentham Science Publishers Bentham Science Publishers Bentham Science Publishers Executive Suite Y - 2 P.O. Box 446 P.O. Box 294 PO Box 7917, Saif Zone Oak Park, IL 60301-0446 1400 AG Bussum Sharjah, U.A.E. USA THE NETHERLANDS [email protected] [email protected] [email protected] Please read this license agreement carefully before using this eBook. Your use of this eBook/chapter constitutes your agreement to the terms and conditions set forth in this License Agreement. This work is protected under copyright by Bentham Science Publishers to grant the user of this eBook/chapter, a non- exclusive, nontransferable license to download and use this eBook/chapter under the following terms and conditions: 1. This eBook/chapter may be downloaded and used by one user on one computer. The user may make one back-up copy of this publication to avoid losing it. The user may not give copies of this publication to others, or make it available for others to copy or download. For a multi-user license contact [email protected] 2. All rights reserved: All content in this publication is copyrighted and Bentham Science Publishers own the copyright. You may not copy, reproduce, modify, remove, delete, augment, add to, publish, transmit, sell, resell, create derivative works from, or in any way exploit any of this publication’s content, in any form by any means, in whole or in part, without the prior written permission from Bentham Science Publishers. 3. The user may print one or more copies/pages of this eBook/chapter for their personal use. -
Ncr Products and Systems Pocket Digest
~[3[a NCR PRODUCTS AND SYSTEMS POCKET DIGEST NCR Corporation improves products as new technology, software, com ponents and firmware become available. NCR reserves the right to change specifications without prior notice. In some instances, photographs are of equipment prototypes. All features, functions and operations described in this digest may not be marketed by NCR in all parts of the world. Consult your NCR repre sentative or NCR office for the latest information . Publisher: Editors: Michael A. Athmer Chris Stellwag Nancy Walker Cover Design: Jim Rohal Design The NCR Products and Systems Pocket Digest is updated annually for NCR Stakeholders worldwide, by: Strategic Promotions Department, USG-2 1334 So. Patterson Blvd. Dayton, Ohio 45479 © January 1991 NCR Corporation Printed in U.S.A. CONTENTS I. SYSTEM 3000 FA MILY Page V. NCR GENERAL PURPOSE NCR 3320 1 WORKSTA TIONS AND SOFTWARE Page NCR 3340 3 2900 Video Display Terminal 37 NCR 3345 5 2920 Video Display Terminal 38 NCR 3445 7 2970 Video Display Terminal 39 NCR 3450 9 PC286 40 NCR 3550 10 ELPC386sx 41 PC386sx 43 11. COOPERATIVE COMPUTING SOFTWA RE PC386sx20 45 NCR Cooperation 11 PC Software 47 The OS/2 Workgroup Platform 111. NETWORKING 49 NCR 5480 Network Processors 15 VI. NCR GENERAL PURPOSE SYSTEMS NCR 5600 Communications System 10000 Family 51 Processors 16 System 10000 Model 35 and Model 55 52 NCR 5660 18 System 10000 Model 65, Model 75, NCRNet Manager 19 and Model 85 53 NCR Open Network System 21 System 10000 Family Matrix 54 NCR WaveLAN 22 9800 Series 56 IV. NCR GENERAL PURPOSE PROCESSORS VII. -
Solutions Manual
SOLUTIONS MANUAL COMPUTER ORGANIZATION AND ARCHITECTURE DESIGNING FOR PERFORMANCE EIGHTH EDITION WILLIAM STALLINGS TABLE OF CONTENTS Chapter 1 Introduction...........................................................................................5 Chapter 2 Computer Evolution and Performance .............................................6 Chapter 3 Computer Function and Interconnection........................................14 Chapter 4 Cache Memory....................................................................................19 Chapter 5 Internal Memory.................................................................................32 Chapter 6 External Memory................................................................................38 Chapter 7 Input/Output......................................................................................43 Chapter 8 Operating System Support................................................................50 Chapter 9 Computer Arithmetic.........................................................................57 Chapter 10 Instruction Sets: Characteristics and Functions ...........................69 Chapter 11 Instruction Sets: Addressing Modes and Formats.......................80 Chapter 12 Processor Structure and Function ..................................................85 Chapter 13 Reduced Instruction Set Computers..............................................92 Chapter 14 Instruction-Level Parallelism and Superscalar Processors.........97 Chapter 15 Control Unit Operation..................................................................103 -
ABSTRACT CO-RESIDENT OPERATING SYSTEMS TASK TEAM REPORT April 181 1973
ABSTRACT CO-RESIDENT OPERATING SYSTEMS TASK TEAM REPORT THIS DOCUI-lENT CONTAINS INFORl-lATiON PROPRIETARY TO THE NATIONAL CASH REGISTER COfoIPAflY AND CONTROL DATA CORPORATION. ITS CONTENTS SHALL NOT BE DIVULGED OUTSIDE OF EITHER CO~lPANY NOR REPROD~CED mTHOUT EXPLICIT PERloJISSION OF THE DIRECTOR AND GENERAL r-lANAGER. NCRICDC ADVANCED SYSTEfolS LABORATORY. April 18 1 1973 · 1 The mission of the co-resident oper.al"ing system task group was: "To define a cost effective mechamism within the new operating system to allow selected 01 d operating syst'ems to operate in their entirety permitting simultaneous execution with no modifications to the old operating system". Four people were assigned to this task, I:wo from NCR wifh ,expBrience on/he NCi\/Century and two from CDC experienced with CYI3ER 70 computer systems. The scope of the probl em was narrowed to a point where productive OLltput could be obtained in the allotted time frame. It was decided the' time could be spent most profitably in a detailad study of emulating the .NCR Century computer systems ,on the IPL.·· This decision was heavily influen'ced by a desire to deal with specific problems , ' ral·her·than'philosophi'cal-cmd incondusive'mattcrs. It was also:f.;:;lt thut The productivity of the team would be greater if it were kept s.mall •. Having limited the problom in scope, vario~sassumptions h.od t:)bo made bdore furi-h.:,:,r progress could be accompl ished. Key in this area wes the assumption thar. ;h:; probkm wos soluble. As a result I Ihe team concentroted on how to effect Iheimp\ernentation, as opposed j'O if if' was possibl e.