Table Of Contents - IBM 5110 User Manual

CHAPTER 1. DATA PROCESSING CONCEPTS ....•• 1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Concepts . . . . . . . . . . • . . . . . . . . . . . . . . . . . . . . . . 1
CHAPTER 2. INFORMATION PROCESSING •..••... 6
Input, Process, and Output . . . . . . . . . . . . . . . . . . . . . 5
Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Putting it all Together . . . . . . . . . . . . . . . . . . . . . . . . 8
Additional Levels of I nput, Process, and Output ....... 9
Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
CHAPTER 3. APL LANGUAGE ELEMENTS ......• 13
Variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Data Representation . . . . . . . . . . . . . . . . . . . . . . . . 14
Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Scaled Representation (Scientific Notation) ....... 14
NumE~ric
Value Range . . . . . . . . . . . . . . . . . . . . . . 14
Numeric Value Precision . . . . . . . . . . . . . . . . . . . . 14
Character Constants . . . . . . . . . . . . . . . . . . . . . . . 16
Logical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Arrays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Generating Arrays . . . . . . . . . . . . . . . . . . . . . . . . 17
Finding the Shape and Rank of an Array . . . . . . . . . 20
Empty Arrays . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Indexing Arrays . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Joining Arrays Together . . . . . . . . . . . . . . . . . . . . . . 26
Catentation . . . . . . . . . . . . . • . . . . . . . . . . . . . . 26
Lamination . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Useful APL Statements and User-Defined Functions ... 31
CHAPTER 4. ACTIVE WORKSPACE CONTROL ..•• 41
The Active Workspace Environment in a CLEAR WS ... 42
Changing the Active Workspace Environment . . . . . . . . 43
Getting Data into the Active Workspace . . . . . . . . . . . . 44
The )LOAD and )RESUME Commands . . . . . . . . . . 45
The )COPV and )PCOPV Commands . . . . . . . . . . . . 46
The )PROC Command . . . . . . . . . . . . . . . • . . . . . 46
Information Provided about the Active Workspace ..... 48
Active Workspace Storage Considerations . . . . . . . . . . . 49
Data Types and Storage Considerations . . . . . . . . . . 50
Additional Storage Using Diskette Data Files . . . . . . . . 54
Contents
CHAPTER 5. CONSOLE CONTROL .•..•...•..•. 59
Controlling the Input from the Keyboard . . . . . . . . . . . 60
Controlling the Information on the Display Screen .... 62
Using the DCC System Function to Control
Information on the Display Screen . . . . . . . . . . . . 63
Sounding the Audible Alarm . . . . . . . . . . . . . . . . . . . 64
Console Control through a User-Defined Function ..... 65
CHAPTER 6. LIBRARY CONTROL .••••.•..•.•. 67
Determining the Size of a Tape or Diskette File . . . . . . . 68
Writing Data to a Tape or Diskette File . . . . . . . . . . . . 69
Using the )SAVE Command . . . . . . . . . . . . . . . • . 69
Using the )CONTINUE Command . . . . . . . . . . . • . 70
Getting Information from a Tape or Diskette File ..... 71
Controlling the Files in the Library . . . • . . . . . . . . . • . 72
Data Security . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
CHAPTER 7. TAPE CONCEPTS ..•....••.....•. 76
Formatting the Tape . . . . . . . . . . . . . . . . . . . . . . . . 76
Determining the Amount of Storage Available
on a Tape Cartridge . . . . . . . . . . . . . . . . . . . . . . . . 78
CHAPTER 8. DISKETTE CONCEPTS .•.•.•..•.•. 81
Diskette Wear . . . . . . . . . . . . . . . . . . . . . . . . . . . • . 82
Diskette Addressing and Layout . . . . . . . . . . . . . . . . . 83
Track and Cylinder . . . . . . . . . . . . . . . . . . . . . • . 83
Sector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
Index Cylinder . . . . . . . . . . . . . . . . . . . . . . . . • . 84
Alternate Cylinders . . . . . . . . . . . . . . . . . . . . . • . 85
Diskette Types and Formats . . . . . . . . . . . . . . . • . • . 85
Diskette Initialization . . . . . . . . . . . . . . . . . . . . . . • . 86
Vol u me I D, Owner 1 D, and Access Protection. . . . . . . . 86
File ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • . 87
Diskette File Write Protect . . . . . . . . . . . . . . . . . . • . 87
Diskette File Organization . . . . . . . . . . . . . . . . . . . • . 88
Reallocating Diskette File Space . . . . . . . . . . . . . . . . . 89
Amount of Storage Available on a Diskette . . . . . . . . . 90
Number and Size of Diskette Files . . . . . . . . . . . . . 91
Types of Data Files . . . . . . . . . . . . . . . . . . . . . • . 91
Allocation of File Space . . . . . . . . . . . . . . . . . . . . 94
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