Introduction to Computers What is Computer Science? Computer Science or Computer Studies is the study of how a computer works from inside‚ how it connects with other computers and how information is spread from one place to another through technology. HARDWARE REQUIRED IN A COMPUTER SYSTEM What is a computer? A computer is a hardware machine which under the control of software performs instructions to do an action. The computer main function is to process data. What is hardware? Hardware are all
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1 X X X X 200 9 3 1 1000 + 900 + 30 + 1 = 2931 Lab 1.2 Create a mapping for the binary number 110 2 using either paper and pencil or a Word document. 110; 4 2 1 X X X 1 1 0 4 + 2 + 0 = 6 Lab 1.3 Create a mapping for the binary number 11 2 using either paper and pencil or a Word document. 11; 2 1 X X 1 1 2+ 1 = 3 Lab 1.4 Create an expanded mapping for the binary number 10010 2 using either paper and pencil or a Word document. 10010; 16 8 4 2 1 X X X
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writing system for expressing numbers‚ that is‚ a mathematical notation for representing numbers of a given set‚ using digits or other symbols in a consistent manner. It can be seen as the context that allows the symbols "11" to be interpreted as the binary symbol for three‚ the decimal symbol for eleven‚ or a symbol for other numbers in different bases. Ideally‚ a numeral system will: * Represent a useful set of numbers (e.g. all integers‚ or rational numbers) * Give every number represented
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NUMBER SYSTEMS • Decimal 0~9 • Binary 0~1 • Octal 0~7 • Hexadecimal 0~F DECIMAL DECIMAL The decimal system is composed of 10 numerals or symbols. These 10 symbols are 0‚ 1‚ 2‚ 3‚ 4‚ 5‚ 6‚ 7‚ 8‚ 9; using these symbols as digits of a number‚ we can express any quantity. The decimal system‚ also called the base-10 system because it has 10 digits. EXAMPLE: 47 = (4 X 101)+(7 X 100) = (4 X 10) + (7 X 1) = 40+ 7 EXERCISE : 568.23 = BINARY BINARY In the binary system‚ there are only two symbols
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Fundamentals of Digital Electronics by Professor Barry Paton Dalhousie University March 1998 Edition Part Number 321948A-01 Fundamentals of Digital Electronics Copyright Copyright © 1998 by National Instruments Corporation‚ 6504 Bridge Point Parkway‚ Austin‚ Texas 78730-5039. Universities‚ colleges‚ and other educational institutions may reproduce all or part of this publication for educational use. For all other uses‚ this publication may not be reproduced or transmitted in any form‚ electronic
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Decimal 10 0‚ 1‚ … 9 Yes No Binary 2 0‚ 1 No Yes Octal 8 0‚ 1‚ … 7 No No Hexadecimal 16 0‚ 1‚ … 9‚ ‚ ‚ ‚ A‚ B‚ … F No No 1 6/28/2012 Quantities/Counting (1 of 3) Decimal 0 1 2 3 4 5 6 7 Binary 0 1 10 11 100 101 110 111 HexaOctal decimal 0 0 1 1 2 2 3 3 4 4 5 5 6 6 7 7 p. 33 Quantities/Counting (2 of 3) Decimal 8 9 10 11 12 13 14 15 Binary 1000 1001 1010 1011 1100 1101 1110
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4.3 4.3 Conversion Between Number Bases 169 Conversion Between Number Bases Although the numeration systems discussed in the opening section were all base ten‚ other bases have occurred historically. For example‚ the ancient Babylonians used 60 as their base. The Mayan Indians of Central America and Mexico used 20. In this section we consider bases other than ten‚ but we use the familiar HinduArabic symbols. We will consistently indicate bases other than ten with a spelled-out subscript
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1 | 2 | 2 | 3 | 3 | 4 | 4 | 5 | 5 | 6 | 6 | 7 | 7 | 8 | 8 | 9 | 9 | Last two Digits 10 | A | 11 | B | 12 | 10 | 13 | 11 | 14 | 12 | 15 | 13 | 2. What is the largest binary number that can be obtained by 16 bits? Mention its decimal equivalent. (4) Largest binary number is (11111111111111111111)2 = (65535)10 Number of bits=n=16 2n-1=216-1=(65535)10 3. Covert the following numbers with indicated bases to decimal: (4310)5 (50)7 (12121)3 (198)12 ‚ ( 1110101
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Number Systems Base 2: The Binary Number System Base 8: The Octal Number System Base 16: The Hexadecimal Number System Learning Objectives • At the end of the lesson the student should be able to: – Identify the different number base system – Convert base ten numbers to base two‚ eight or sixteen – Convert base two‚ eight or sixteen numbers to base ten – Perform basic operations on various base numbers Number Base • What is a number base? A number base is a specific collection
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Ch 24 Ty Underwood Both Charles Darwin and Sigmund Freud were characterized for challenging previous Enlightenment thinking‚ through their theories of evolution‚ explanation of rationalization and new perspectives of scientific thought. Both men brought revolutionary and highly controversial new ideas to the forefront of Europe’s educated minds. Darwin and Freud became famous from then all the way up to modern day with their ideas that essentially exactly opposed the popular
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