Compute!

Product announcement for Gladstone Electronics’ 64K RAM expansion.

The Sinclair Spectrum was introduced in the US at the CES. TIMEX was actively promoting the $99.00 TIMEX/Sinclair computer.

A short program to find program lines in memory and change the line number.

Product announcement for Sunflower Systems’ 64K RAM pack.

Letter to the editor from a 2068 user looking for software to type in.

Correction to ZX-81/TS-1000 Data Management program that appeared in the March 1983 issue of Compute!

Product announcement for Personal Weight Control Program, a computerized diet and nutrition program from International Publishing & Software.

Three programs for teaching math and spelling skills.

Correction to earlier article.

The new Sinclair computer is called the ZX Spectrum – a color computer with 16 or 48K of RAM. This computer is already being sold in the UK for under $350.

Among the several new computers introduced at the June CES, one of the most interesting entries was the Sinclair ZX-80. This Z-80-based computer (which weighs only slightly more than its instruction manual (320 g vs. 250 g)) contains a full typewriter-like keyboard (membrane type), 1 KB of RAM and a 4 KB BASIC.

Correction to an earlier article.

Review of Melbourne House’s Gamestape 1, a collection of 11 games for the 2K Timex/Sinclair.

Review of Programmers Toolkit and Graphics Kit from Softsync.

This short guide to the graphics capabilities of the Sinclair/Timex computers demonstrates pattern creation, circles, conic sections, and bar graphs. To show how graphics can be used in games, there is “Asterbelt,” which will test your abilities as a spaceship pilot.

John Crum of Auburn, WA, started with a ZX-81. Peter Lobl, a tenth grader in Lindenhurst, NY, started with a ZX-80.

Product announcement for KOPAK Creations KOPAK Keyboard and E-Z Key 60.

This game is an excellent educational tool for children and is based on a previously published Compute! article. The author also include conversion tips for T/S users who want to translate programs originally written for other computers.

Single-player treasure/maze game.

“One of the most interesting phenomena could be Sinclair,” he says. “Sinclair has introduced a series of small, not very powerful, but remarkably inexpensive computers. While people who are used to the speed of, say, a PET or a VIC would find some of the existing Sinclair computers very slow, we can’t ignore the fact…

Review of two video games from Softsync, Inc.

Product announcement for Micro Math.

Review of Softsync’s Mothership video game.

More than a dozen new home/personal computers made their debuts at the recent Winter Consumer Electronics Show in Las Vegas. This four-day extravaganza seemed to fulfill many of the predictions of a home computer revolution we’ve been hearing for the past several years. The T/S 2000 is mentioned on page 34, along with the printer.

This short program analyzes your paycheck for accuracy and lets you predict future take-home pay so you can budget accordingly. Also included is a variable table for easy and personalized modification.

Review of Player ZX81 from Wm. Maples.

Program conversion between BASIC dialects is often easier than imagined. This tutorial demonstrates the compatibility of TI BASIC and Sinclair BASIC and includes helpful tables and sample conversion programs.

Product announcement for Z-DUBBER from Bytesize Computer Products.

Relational operators can make your BASIC programs more efficient. Here are some techniques which use relational operators on the Commodore, Atari, TI, Apple, IBM PC and PCjr, Color Computer, and Timex/Sinclair machines.

Product announcement for The Watchmakers Guidebook to the Timex/Sinclair Computers. Lists 120 software suppliers, 50 hardware suppliers and 20 ancillary suppliers. Also contains directories of user groups and Timex/Sinclair specific magazines and books.

Like its predecessors, the ZX-80/81 microcomputers, the new ZX Spectrum appears to be yet another price breakthrough for Sinclair Research and founder Clive Sinclair. It offers features and memory capacity heretofore unavailable in machines costing up to $1,000 – yet it is selling for the equivalent of only about $200!

This article adapts a previously published Compute! program to the Sinclair ZX-81. It is also a brief tutorial on the special features of the ZX-81’s BASIC, showing how you can reload programs without losing data previously saved. The program requires 16K.

This short, clever technique allows you to put text on screen and then clear the screen below at will, leaving your messages intact.

Product announcement for Blackjack, Checkbook, Data Filer, Graphics Drawer, Phone Book, Pixel Drawer, Tic-Tac-Toe and Word Scramble from Dynacomp.

Product announcement for games from Software Development Associates.

Short machine language routine to play tones via the computer’s mic output.

Product announcement for The Parrot from R.I.S.T.

Product announcement for Graphpak from Practical Computer Products.

Product announcement for Mothership, an arcade-style space fighter game in 3-D.

Product announcement for The Screen Machine, a machine language utility that allows input anywhere on the screen and performs some data validation, and Vu-Write Text Editor, a menu-driven text editor. Both by Syncmaster.

Product announcement for Ksoft’s Tax Return Helper. Seven programs to help with Form 1040 and schedules A, B, C, C1/C2, D and E.

Overview of computers shown at the 1983 Summer Consumer Electronics Show. Timex showed the 2048 (“48K RAM and 24K ROM”) and T/S 2024 (“24K RAM and 16K ROM”), this time in the Timex case, and the Timex/Sinclair 1500.

Review of The Flight Simulator, available from Gladstone Electronics.

Adventure game for the Timex/Sinclair 1000.

Letter to the editor asking if T/S 1000 software and printer will work with T/S 2000.

Summer CES. Sinclair showed Spectrum. Timex debuted 1000. Data-Assette showed its keyboard and ZX-99.

You no longer have to pay more for your printer than you did for your computer. There are now a number of good, low-cost printers that offer many of the features found in more expensive models. Includes Timex/Sinclair 2040 Thermal Printer.

Review of the T/S 2040.

Review of the 2068.

Product announcement for The Programming Kit I, a BASIC tutorial for Timex/Sinclair users, Family Pak, a set of five 2K programs, and Scyon’s Revenge, a deep-space combat game that includes 3-D simulation. All programs are from Timeworks.

Letter about incompatibility between Sinclair ZX81, Memotech Memopak 32K RAM and Timex/Sinclair 2040 printer.

Product announcement for the Timeworks Computer Control Center, a molded plastic tray that holds a T/S-1000, several cassettes, RAM pack and a 13-inch TV.

Product announcement for four games from JPR Software: Megawurm, The Assassin, Orgs & Ogres and The Dark Empire.

Product announcement for The Timex/Sinclair 1000 Basic Handbook, from Sybex, and How to Use the Timex/Sinclair, from dilithium Press.

Correction to earlier article.

As anyone who has worked with a ZX-81 or TS-1000 knows, the scroll facility could be expanded and improved. It cuts down the display file, and screen POKEs (which are difficult at best) are made nearly impossible. This article provides the solution.

Addendum to screen scrolling program to let it work with 2K.

Product announcement for Tutor, List, Check, Index, Stock and Inven from D. Lipinski Software.

Product announcement for L-Monitor.

Product announcement for Car Comp, a “rigid platform to which the computer and cassette recorder can be attached.” L&G Enterprises.

Suggestions for making sound on the ZX-81, a comparison of the ZX-81 vs TS-1000, improving usability of the 16K RAM pack.

This program enables you to make quite accurate local weather predictions.

Use of the RND command. Specific instructions for TS-1000 included.

Sampler of four programs, all run in 1K. Etch-A-Screen, Music Composer, Checkbook Balancer, and Billboard by LAMO-LEM Laboratories.

Product announcement of Math Drill, Golf and Towers of Hanoi from RAK Electronics.

The user of the Timex-Sinclair computer can store and work with data files, even though some commands for handling data are missing. This program can be easily adapted for other kinds of data management, too.