Speed of a Computer Patrick Reagan Computers and Information Processing/CIS319 David Avery Jr. December 14‚ 2008 Speed of a Computer Computers have evolved dramatically over the last 70 years. The size may be one of the main changes. The first computers were the size of a classroom. Today a computer can fit in an adult hand. Another change is the speed in which the computer operates or processes information. The computer user in today’s market wants information
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Section 1 Introduction 1.1 COMMUNICATIONS Computer communications is the process of sharing data‚ programs‚ and information between two or more computers. We have discussed numerous applications that depend on communication systems‚ including: • E-mail – Provides a fast‚ efficient alternative to traditional mail by sending and receiving electronic documents. • Instant messaging – Supports direct‚ “live” electronic communication between two or more friends or buddies. • Internet
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SOLUTIONS MANUAL DATA AND COMPUTER COMMUNICATIONS EIGHTH EDITION CHAPTERS 1 - 12 WILLIAM STALLINGS Copyright 2007: William Stallings © 2007 by William Stallings All rights reserved. No part of this document may be reproduced‚ in any form or by any means‚ or posted on the Internet‚ without permission in writing from the author. Selected solutions may be shared with students‚ provided that they are not available‚ unsecured‚ on the Web. -2- NOTICE This manual contains
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A DISCURSIVE ESSAY Some people say that computers have made life effortless and more comfortable‚ others advocate for the idea that computers have made life more difficult and complicated. However‚ in my opinion‚ computers have brought convenience and comfort to our lives since they enable simpler access to information and tremendously increase the quality of communication. Firstly‚ the computer is a relatively new technology and young people have been learning to use it from early ages Therefore
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COMMUNICATION AND COMPUTER NETWORK 4.1 INTRODUCTION Today computer is available in many offices and homes and therefore there is a need to share data and programs among various computers with the advancement of data communication facilities. The communication between computers has increased and it thus it has extended the power of computer beyond the computer room. Now a user sitting at one place can communicate computers of any remote sites through communication channel. The aim of this chapter
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1.1 Background 1.2 Uses of computer communications 1.2.1 Computer-oriented communication 1.2.2 Telecommunications 1.2.3 Radio and television broadcasting 1.2.4 Summary of uses of computer communications 1.3 How computers communicate 1.3.1 Information‚ time and space 1.3.2 Agreement and implementation 1.3.3 Human influences 1.5 Chapter summary Communication is beneficial for the human race. By communicating with one another‚ information can be shared - past experience‚ current
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Data transmission‚ digital transmission‚ or digital communications is the physical transfer of data (a digital bit stream) over a point-to-point or point-to-multipoint communication channel. Examples of such channels are copper wires‚ optical fibres‚ wireless communication channels‚ and storage media. The data are represented as an electromagnetic signal‚ such as an electrical voltage‚ radiowave‚ microwave‚ or infrared signal. Data representation can be divided into two categories: Digital
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CS200-Chapter8-Homework Multiple Choice Identify the choice that best completes the statement or answers the question. ____ 1. Computer communications describes a process in which two or more computers or devices transfer ____. a. data c. instructions b. information d. all of the above ____ 2. A communications ____ is a transmission medium on which the data‚ instructions‚ or information travels. a. route c. flow b. channel d. path ____ 3. Text messaging‚ also called ____
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What is a computer: A computer is an electronic device that executes the instructions in a program. A device that accepts data‚ processes the data in accordance with the stored program‚ generates results and usually consists of input‚ output‚ storage‚ Airthmatic logic and control units. A computer has four functions: a. accepts data Input: Data or information written into the computer by user The Information Processing Cycle b.processes data Processing: The calculations performed according
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COMPUTER COMMUNICATION NETWORKS Objectives • • • • • What is telecommunication History of telecommunication Role of telecommunication in Organizations Interpersonal communication applications Computer networks What is telecommunication? “Transmission of data or audible/visible information by electrical/electronic means” e.g. telephone‚ telegraph‚ radio‚ television‚ computer networks (Internet) Basic elements 1. Transmitter : takes information and converts it to a signal 2. Transmission
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