CONTENTS
Preface = ⅶ
Chapter 1 How Computers Work : The Binary Number System = 1
Logic = 3
Binary and Decimal Mathematics = 10
Hexadecimal and Octal Numbers = 15
Coding Systems = 16
Chapter 2 Programming and Language = 19
How Calculators Function = 21
How Computers Function = 22
Programming Style Considerations = 38
Beginners All-Purpose Symbolic Instruction Code(BASIC) = 46
More about Language = 55
Chapter 3 Computer Components : Input, Output, and Storage Devices = 67
Mainframes = 70
Information Storage Devices = 71
Input Devices = 75
Output Devices = 78
Communication Devices = 83
Chapter 4 Systems Development : A Cogent Approach = 87
Introduction to Systems = 89
Proposal To Perform Systems Analysis = 90
Team Formation = 91
Objectives Identification = 92
Operational System Analysis = 93
Alternative Systems Analyses = 95
System Design = 96
System Controls = 98
Backup System = 99
Human Factors = 100
Testing and Implementation = 101
Chapter 5 A Hypothetical Pharmacy System = 103
Data Structures = 106
Algorithms = 135
Appendix A Glossary = 149
Appendix B ASCII and EBCDIC Codes = 161
Appendix C Sample BASIC Program = 171
Appendix D Sample Pascal Program = 175
Appendix E Sample Proposal To Conduct Systems Analysis = 181
Appendix F Systems Analyses Completion Report = 193
Appendix G A Quick Review of Number Systems = 199
Index = 205
