| 2K to 4K RAM Upgrade - An Introduction to ZX/TS Hardware | Aside from the obvious fact that the TS1000 is an incredibly powerful computer for the money, it has a barebones simplicity in its hardware design that invites the user to explore and learn the hidden secrets of its digital circuitry. | 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 | Listing 6: Insert equals signs between the letters and numbers in the LET statements. Making Backups for Machine Language Tapes, 3:1. Section 2. Copying with PEEK and POKE. The second paragraph should begin: PRINT PEEK 16388+256*PRINT PEEK 16389 . . . | |
| Just for Fun | Horizontal Bar Graph; Isosceles Triangle; Mandalas; Name Program | |
| Letters | I would like to suggest two changes in the loan amortization program (SYNC 3:1, p. 30): Add: Change line 145 to: The “TOTAL PAID” line is useful in comparing two different mortgage programs, e.g., a home loan at 13.5% for 30 years versus 12.25% for 15 years. | |
| 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. | 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 | 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 able to operate as independently as possible. | 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? | 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 | Our theme section “SYNC at the Workbench” focuses on hardware projects that will enable you to control a robot, convert your ZX81 or TS1000 into a “2000,” add a counter and a joystick, extend your RAM, and connect to a monitor. | |
| The Votem | Votem. Kit: $39.95; assembled and tested: $59.95; plus $3 s&h. Down East Computers, PO Box 3096, Greenville, NC 27834. 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. | Timex/Sinclair 1000 |
| Timex Developments | The printer is out. Three new machines are about to hit the market. Another price reduction is made. These are among the recent developments in the Timex Sinclair computer field. Timex Sinclair 1000 for $49.95 In our last issue we reported that Timex Computer Corporation had reduced the suggested retail price for the TS1000 to $69.95. | 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 |
