ZX81 Learning Lab

The ZX81 Learning Lab is an eight cassette and manual for teaching the reader how to use and program the Zx81.

The manual covers the following chapters :

• INTRODUCTION

• • Getting the ZX81 Going
  • Computer Systems
  • Generalisations

• CHAPTER 1 The Computer as a Calculator

• • 1.1 Interaction with the system
  • 1.2 Complex expressions
  • 1.3 Variables
  • 1.4 Functions

• CHAPTER 2 Starting to Program

• • 2.1 Simple programming
  • 2.2 Making programs re-usable
  • 2.3 Program editing
  • 2.4 Print formatting

• CHAPTER 3 Getting Aroung (Using GOTO and IF)

• • 3.1 Iteration (1)
  • 3.2 Conditional expressions
  • 3.3 More functions

• CHAPTER 4 Tidying Up (Program Design, FOR and NEXT)

• • 4.1 Program design
  • 4.2 Iteration (2)
  • 4.3 Iteration at work

• CHAPTER 5 Speeding Up and Looking Nice

• • 5.1 Using conditional expression values
  • 5.2 Running modes
  • 5.3 Making use of the display facilities
  • 5.4 The ZX Printer

• CHAPTER 6 Using the Cassette
• CHAPTER 7 Subroutines

• • 7.1 Making use of subroutines
  • 7.2 Graph plotting
  • 7.3 Input expressions

• CHAPTER 8 Handling Text Strings

• • 8.1 String manipulation
  • 8.2 String representation

• CHAPTER 9 Arrays

• • 9.1 String arrays
  • 9.2 Numeric arrays

• CHAPTER 10 From Theory Into Practice

• • 10.1 Random numbers
  • 10.2 A full program (1)
  • 10.3 A full program (2)
  • 10.4 A full program (3)

• CHAPTER 11 A Glimpse Into Another World

• • 11.1 Inside the ZX81
  • 11.2 Machine code programming
  • 11.3 The ZX81 system variables

• CHAPTER 12 And Finally
• APPENDIX A A Comparison of Different Versions of BASIC
• APPENDIX B Common Problems and Solutions
• APPENDIX C BASIC Command Summary
• APPENDIX D Report Codes