| 2K to 4K RAM Upgrade - An Introduction to ZX/TS Hardware | | Sinclair ZX81, Timex/Sinclair 1000 |
| Adding a Counter in Hardware | Adding hardware timer/counters to the Microace. | MicroAce |
| Adding A Joystick To The Timex-Sinclair 1000 | Adapt an Atari joystick to emulate the arrow keys. | Sinclair ZX81, Timex/Sinclair 1000 |
| Buyer's Guide Supplement | Buyer’s guide products that did not make it in the prior issue. | |
| Connect a Monitor to the TS1000 | How to connect a TS1000 directly to a composite monitor. | Timex/Sinclair 1000 |
| Directory of Suppliers | Supplement to list in v3n3. | |
| Glitchoidz Report | | |
| Just for Fun | Horizontal Bar Graph; Isosceles Triangle; Mandalas; Name Program | |
| Letters | | |
| Machine Code and Your TV Screen | One of the ways that Basic is slow is in putting things on the screen. Have you ever played a game in Basic and you wanted things to zip across the screen, but, instead, they crawled? It is frustrating, but Basic is simply very slow in this department. In the 8K Basic SLOW mode, even | Timex/Sinclair 1000 |
| Memopak High Resolution Graphics Module | The Memopak High Resolution Graphics Module, in dull black matching the computer, fits in between the Memopak parallel printer interface and the 64K memory module. Velcro tape or double sided adhesive tape comes with each unit to ensure a wobble-free set-up. | Timex/Sinclair 1000 |
| Perceptions | In this issue Perceptions will take up I/O (Input/Output) ports. The fundamental issues are discussed, and a sample method for their application to the TS1000/ZX81 is described. | Sinclair ZX81 |
| Robotics on a Budget | The Project A little over a year ago I decided to start building a robot. I had no idea that it would lead to a project fully controlled by a computer. However, as I started reading more about robots and the robotics law, I realized that a true robot had to be a self-contained entity | Sinclair ZX81 |
| RUNning with Reduced RAM | For most of us, the anticipation of being able to write extended programs when we first plugged in our new 16K RAM pack was soon somewhat tempered by the waiting out of the monotonous count at the end of every SAVE and LOAD. Also, functions such as CLS and NEW take much longer. | Sinclair ZX81 |
| So You Wished You Had Bought a TS2000 | How would you like to have a computer with a color video display of fifteen colors, quality sound, high resolution, unlimited character sets, and a dual joystick interface? How would you like a system in which you do not have to worry about expansion? If you have a ZX81 (or ZX80 with the 8K ROM), | Timex/Sinclair 1000 |
| Stringing along with the ZX81 | Using string statement to emulate READ/DATA by slicing the characters from the string which make up a data-set, converting the sliced substrings to a numerical value, if necessary, and then using these substrings as program variables. | Sinclair ZX81, Timex/Sinclair 1000, Type-in program |
| Sync Notes | Sinclair and Timex owners across USA will be adding LPRINT state merits to their favorite programs. They will soon find out that there are some bugs in the LPRINT Command. The problem is not in the printer, but in the Sinclair 8K ROM. The first bug involves the improper printing of numbers between .01 and | |
| The Votem | The Votem, to play on James J. Carr’s book Digital Interfacing to an Analog World (Tab Books, Summit, PA. 1978), is an analog interface to Sinclair’s digital world. Analog/Digital Conversion Analog (related to analogous) refers to relationships by ratios. The analog device relates numbers to a turn on a wheel such as our rapidly disappearing | Timex/Sinclair 1000 |
| Timex Developments | | Timex Computer 2048, Timex/Sinclair 1500, Timex/Sinclair 2000, Timex/Sinclair 2068 |
| Try This | Three short programs. | Sinclair ZX81, Timex/Sinclair 1000, Type-in program |
