| [Rochester Institute of Technology offers two intensive computer courses for deaf adults...] | | |
| [The 8K ROM produces a different screen display than the 4K ROM.] | | Sinclair ZX80 |
| [These SYNTAX readers would like to hear...] | Readers from California and Texas. | |
| 4K Programs on 8K ROM | 8K ROM won’t load 4K tapes. | Sinclair ZX80 |
| 4K ROM Listing - Initialization | Computer initialization routine in 4K ROM. | Sinclair ZX80 |
| 8K ROM Changes | Revisions to previous programs for 8K ROM. | Sinclair ZX80 |
| 8K Syntactic Sum | Modified version for 8K ROM. | Sinclair ZX80, Type-in program |
| All-Purpose Beeper | Circuit to emit a “beep” every time your ZX80 or MicroAce reads from or writes to a selected memory address. | Sinclair ZX80 |
| Beginners' Computing Magazine | OnComputing changes its name to Popular Computing. | |
| CAI Update | CAI Instruments is almost ready with their Widget series peripherals for ZX80s and MicroAces. | |
| Dear Editor | Letters about new 8K ROM features; keyboard problems; video blanking; building additional RAM; interfacing to real world; improvements to bar graphics program; printing statements. | MicroAce |
| EZUG Newsletter | The Educational ZX80/1 Users’ Group (EZUG) publishes a newsletter each month for ZX80 users. | Sinclair ZX80, Sinclair ZX81 |
| Inverse Cryptology | Challenging code breaking game for 2 uses 4K ROM and 1K RAM. | Sinclair ZX80, Type-in program |
| Keyboard Beeper | Review of Burnett Electronics’ keyboard beeper. | Sinclair ZX80 |
| Machine Code Programming - Multiplication and Division | Multiplication and division require more thought and attention to detail. | Sinclair ZX80 |
| Matrix Drawing | Draws characters on a 13×20 matrix. | Sinclair ZX80, Type-in program |
| Microperipheral Abandons Modem | Gave up plans to produce ZX80 modems because they had to add many hardware features not in the ZX80. Modem would have cost more than the original computer. | |
| Modifying Hex Monitor for 4K | Hex Monitor (May 81) stores ML programs without shielding them from BASIC. These changes load ML to reserved space. | Sinclair ZX80 |
| News From MicroAce | MicroAce and ZX80 owners who want the flicker-free feature of the ZX81 can get it with an add-on board from MicroAce. The board contains only 6-7 chips and solders onto your PC board. The cover fits over the machine with the board installed, although the fit is a little tight on a ZX80. | MicroAce, Sinclair ZX80 |
| PEEK, POKE & CHR$ for Beginners (4K) | Explanation of the commands and functions. | Sinclair ZX80, Type-in program |
| Placing USR Calls in 4K, 8K | Differences between both ROMs and machine code locations. | Sinclair ZX80 |
| Programmed Responses - Latin Roots | Drill for students of Latin and Greek. | Sinclair ZX80, Type-in program |
| Programming Language Terminology | Definition of terms. | |
| Syntax Errors | Errors with Martin Iron’s line renumbering program. | Sinclair ZX80 |
| ZX80 Prestel Model | Model of the British Prestel data base tree structure. It can be used with your own data for display to show how Prestel data is accessed. | Sinclair ZX80, Type-in program |
