| Aligning Decimal Points | Subroutines to align decimals and control the number of digits displayed after the decimal. | Timex/Sinclair 1000, Type-in program |
| BASIC Programming (part 3) | BASIC language programming tutorial, building a name/address file. | Timex/Sinclair 1000, Type-in program |
| Hardware Hints | Offers several solutions for preventing the ZX81 from overheating. | Timex/Sinclair 1000 |
| Machine Code Programming (part 3) | Machine language programming tutorial. | Timex/Sinclair 1000, Type-in program |
| Merging BASIC Programs | Method for typing in a second program without losing the first. | Timex/Sinclair 1000 |
| Single-Key Shifted Functions | Describes how to use diodes and integrated circuits to map a single key to a shifted-key function on the ZX81. | Timex/Sinclair 1000 |
