Chapter 1 An Introduction to Computer Science INVITATION TO Computer Science 1 Objectives After studying this chapter‚ students will be able to: • Understand the definition of computer science • Write down everyday algorithms and evaluate them to determine if they are ambiguous or not effectively computable Invitation to Computer Science‚ 6th Edition 2 Objectives (continued) After studying this chapter‚ students will be able to: • Understand the roots of modern computer
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Brief History of Computers (A Look Back at Computing) Computers have become one of the most important parts of modern society. Nearly everything that is modern required or uses computer related technology in some way. But how did computers as we know them come to exist? Did someone sitting in his lab just one day say‚ "Aha! I’ve got it! The computer?! Well‚ no‚ that is not how this happened. Rather‚ many years of brilliant ideas and research from many different individuals contributed
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prime. Decimal - Based on 10 Example: the numbers we use in everyday life are decimal numbers‚ because there are 10 of them (0‚ 1‚ 2‚3‚4‚5‚6‚7‚8 and 9). Often "decimal number" is also used to mean a number that uses a decimal point followed by digits that show a value smaller than one. Example: 45.6 (forty-five point six) is a decimal number. Denominator -The bottom number in a fraction. Shows how many equal parts the item is divided into. Difference - The result of subtracting one number
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COMPUTERS A Computerized World Computers play an important role in this modern society. All people around the world are forced the "computer age" nowadays. Since the first computer was made in the late 1950s‚ which I heard that was came from the Chinese Abacus‚ the technology has developed extremely. Computers are everywhere and control a great deal of our living environment. More and more areas are being taken over by the computer. Not able to use a computer is a serious handicap with ramifications
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figures. A Zero to the right of a digit beyond the decimal point is a significant figure. The number 14.720 consists of five significant figures. (Note the zero would not be necessary to set the decimal point‚ thus it is significant). A zero is not significant if it merely fixes the decimal point. The number 0.031 contains two significant figures‚ the zero sets the decimal point and is not significant. In the number 1200 the zeros may or may not be significant. The digits and zeros shown in the decimal
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combination of the quotient and the remainder. Remainder of the result is always truncated. 2. Floating point arithmetic Due to economic consideration‚ computers are designed such that each location in memory at stores only a finite number of digits. For example‚ A computer has a memory in which each location can store one or more signs. There are two methods for representing the real numbers. Assume a fix position for decimal point and store all number (after appropriate
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The number base familiar to us is base 10‚ upon which the decimal number system is built. There are ten symbols - 0 to 9 - used in thesystem. Place Value • What is the concept of place value? Place value means that the value of a digit in a number depends not only on its own natural value but also on its location in the number. It is used interchangeably with the term positional notation. • Place value tells us that the two 4s in the number 3474 have different values
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LESSON PLAN IN MATHEMATICS VI I. Learning Objectives Cognitive: Perform more than two operations on whole numbers with or without exponent. Psychomotor: Show cooperation when working in team. Affective: Practice honesty in doing ones work. II. Learning Content Skill: Performing more than two operations on whole numbers with or without exponents. Ref. PELC A.1.5 Lesson Guide 6 Values: Cooperation/ Honesty III. Learning Activities A. Preparatory Activities 1. Drill 2. Checking of Assignment
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MATH 4 A. DIVISION of WHOLE NUMBERS B. DECIMALS a. PLACE VALUE of DECIMALS PLACE VALUE | Trillions | Billions | Millions | Thousands | Ones / Unit | Decimalpoint | .1 | .01 | .001 | HUNDRED | TEN | TRILLIONS | HUNDRED | TEN | BILLIONS | HUNDRED | TEN | MILLIONS | HUNDRED | TEN | THOUSANDS | HUNDREDS | TENS | ONES | | TENTHS | HUNDREDTHS | THOUSANDTHS | 5 | 8 | 9‚ | 6 | 1 | 2‚ | 7 | 4 | 5‚ | 6 | 1 | 8‚ | 3 | 2 | 5 | . | 1 | 6 | 2 | b. READING and WRITING DECIMALS
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ASABE Guide for Authors Style Guide for ASABE Technical Publications Numbers Units of Measurement Time and Dates Abbreviations in Text Abbreviations in References Abbreviations of States and Territories Figures Tables Equations References ASABE Format for Journal Articles and Meeting and Conference Papers Style Guide for ASABE Technical Publications All material should be written in clear‚ correct American English. All ASABE technical publications use the same editorial style. The best way to
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