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Understanding Digital Computers
  • 作 者:
  • 出 版 社:Inc.
  • 出版年份:1964
  • ISBN:
  • 标注页数:166 页
  • PDF页数:174 页
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Chapter 1 INTRODUCTION 1

What Is a Digital Computer? 3

What Does"Digital"Mean 4

Analog Versus Digital 5

The Black Box Computer 5

Inside the Black Box 9

Chapter 2 FUNDAMENTALS OF COMPUTER PROGRAMMING 13

What Programming Is 13

Computer Words 14

Instructions 15

Writing a Program 16

Additional Operations 17

A More Complex Program 18

Jump Instructions 20

Adding from 1 to 100 21

Chapter 3 THE BINARY NUMBER SYSTEM 25

Number Systems 25

Circuits and Numbers 28

Binary Numbers 29

Converting Decimal Numbers to Binary Numbers 31

A Better Decimal-Binary Conversion Method 32

Binary Coded Decimal Numbers 33

Binary Addition 34

Binary Subtraction 35

Binary Multiplication 38

Binary Division 39

Chapter 4 AN INTRODUCTION TO LOGICAL DESIGN TECHNIQUES 41

Bits 42

The Transmission of Bits 43

The Five Circuit"Building Blocks" 44

Logic and Computers 48

Introduction to Logical Design 49

Boolean Algebra 53

The OR Function 55

The AND Function 56

More Switch Circuits 57

Boolean Algebraic Identities 58

The NOT(or Inverse)Function 58

The Adder Circuit in Review 61

Chapter 5 BUILDING BLOCK CIRCUITS 64

Diodes 65

Triodes 66

Circuits 68

The Inverter 68

Gates 69

Bistable Circuits—the Flip-Flop 75

Flip-Flop Inputs 77

Counting Circuits 79

Delay Circuits 80

Chapter 6 CALCULATING CIRCUITS 83

Registers 83

Addition Circuits 87

Logical Design of a Full Adder Circuit 88

A Three-Digit Parallel Adder 92

Subtraction 93

Complements and Negative Numbers 96

The Accumulator 98

Multiplier Circuits 104

Chapter 7 CONTROL CIRCUITS 106

The Machine Cycle 107

BASIC 108

Decoding Instructions 110

Memory Control Circuits 112

Program Counter 114

Time Pulse Distributor:A Master Timing Device 115

Command Generator 117

Chapter 8 MEMORY DEVICES 126

Punched Cards and Paper Tape 129

Magnetic Recording 130

Magnetic Drum 130

Magnetic Tape Memories 132

Ferrite Core Memory Systems 133

Appendix 143

1.Hints for Finding Circuit Diagrams from Equations 145

2.Schematic Symbols 145

3.Glossary 147

4.Bibliography 160

INDEX 163

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