1.1.4 Exercise 1.1.4: Create an expanded mapping for binary number 10010 subscript 2. 2^7 | 2^6 | 2^5 | 2^4 | 2^3 | 2^2 | 2^1 | 2^0 | 128 | 64 | 32 | 16 | 8 | 4 | 2 | 1 | x | x | x | x | x | x | x | x | 0 | 0 | 0 | 1 | 0 | 0 | 1 | = 18 = 18 0 | 0 | 0 | 0 | 16 + | 0 + | 0 + | 2 + | 0 | Exercise 1.1.5: Create an expanded mapping for the binary number 11100010 subscript 2. 2^7 | 2^6 | 2^5 | 2^4 | 2^3 | 2^2 | 2^1 | 2^0 | 128 |
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BUSINESS DATA COMMUNICATIONS HOMEWORK 1 – BINARY CALCULATIONS (13 PTS MAX) 1. Use the ASCII code to indicate the 7-bit code representation for the following: .5 pts each A. T 1010100 B. ! 0100001 C. g 1100111 D. r 1110010 2. Now, add odd parity to each of the codes in problem 1A and 1B above, placing the parity bit in the most significant digit. Add even parity to each of the codes in problem 1C and 1D above, placing the parity bit in the most significant digit. .5
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Chapter 1 review questions 1. Which of the following is an example of a PC? The 8088 processor marked the start of the home and office based PC’s given that it had a 1mb address limit making a more efficient machine. 2. Who is credited with the patent of the first computer? John V. Atanasoff was the first person accredited for the invention of the computer due to his use of modern digital switching techniques. 3. In the Von Neumann architecture, what two make up the CPU? In Von Neumann’s
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Using a computer everyday can have more negative than positive effects on children. Do you agree or disagree? It has generally been observed that children are increasingly using computer every day. As the statement indicates, I also believe that using computer daily by children would have more adverse impacts on children rather than positive ones. In following I will investigate this issue furthermore. Firstly, we all know that children require physical activities. Accordingly, in many cases
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types of number systems: * Binary number system * Decimal number system * Octal number system * Hexadecimal number system BINARY NUMBER SYSTEM In mathematics and computer science, the binary numeral system, or base-2 numeral system, represents numeric values using two symbols: typically 0 and 1. More specifically, the usual base-2 system is a positional notation with a radix of 2. Numbers represented in this system are commonly called binary numbers. And it is also the most
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internally use the binary (base 2) number system to represent data and perform arithmetic calculations. The binary number system is very efficient for computers, but not for humans. Representing even relatively small numbers with the binary system requires working with long strings of ones and zeroes. The hexadecimal (base 16) number system (often called "hex" for short) provides us with a shorthand method of working with binary numbers. One digit in hex corresponds to four binary digits (bits), so
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virus designed to erase/alter data/program from a computer systems memory/disk is called as worm. 8) The process of writing computer intersections in a programming language is called coding. 3. Match the following:1 2 3 4 5 6 7 8 Cell ATM Binary numbers Binary device DML E-mail Ink jet Kilo bytes A B C D E F Automatic teller machine Intersection of rows &columns in a spreadsheet Used for user authorisation 0&1 Electronic mail A language used to enter and manipulate data in a database G 1024 bytes
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32x | 16x | 8x | 4x | 2x | 1x | | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 11001001 | 128 + | 64 + | 0 + | 0 + | 8 + | 0 + | 0 + | 1 = | 255 | 1.1.10 | 2^7 | 2^6 | 2^5 | 2^4 | 2^3 | 2^2 | 2^1 | 2^0 | | 128 | 64 | 32 | 16 | 8 | 4 | 2 | 1 | Binary | 1 | 0 | 1 | 1 | 1 | 0 | 0 | 1 | | 128 | 0 | 32 | 16 | 8 | 0 | 0 | 1 | Decimal | 185 | | | | | | | | 1.1.11
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Unit 1 History and Architecture Copyright © 2008 Heathkit Company, Inc. All rights reserved. A Short History of the Computer 2 Objective • Describe some of the earliest forms of computers. 3 The Abacus 4 Charles Babbage’s Analytical Engine 5 The Hollerith Machine 6 First Electronic Digital Computer 7 ENIAC 8 Colossus 9 • Describe some of the earliest forms of computers. 10 The Emergence of the Personal Computer 11 Objective • Discuss
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Computer Structure & Logic Notes 9/21/13(Overview) Computer – An electronic device that will take data & process data into information Binary – Only language a computer understands Computer Cycle/Machine cycle – Four parts: 1.Fetch – Go get the instructions 2.Decode – Machine code = binary code 3.Execute – Solve the instructions 4.Store – Puts the answer in temporary locations called registers (motherboard) What is a computer system? - Five Parts
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