February 8, 2006

Sinclair ZX81 Computer Kits

February 8th, 2006

All parts are high quality and the glass epoxy PC board has a clearly silk screened parts legend. Further documentation can be found in the books section. Each kit contains all the necessary parts, including UK keyboard, case, printed circuit board, resistors, capacitors, connectors, integrated circuits, power supply (110v), cables etc. Assembly instructions are available in the Technical Support Section. When completed, the ZX81 computer can hook up to Channel 33 on any black & white or color TV for its video display (UK (PAL) and US (NTSC) Compatible – selectable by jumper when the kit is being assembled). It has a complete (English) BASIC language interpreter in ROM memory, and it can save and load progams on standard cassette tape recorders. The kit’s five Integrated Circuits make clear the architecture of a typical computer. Processor (1) , ROM (1), RAM (2) , and Glue Logic (1). As the kits were originally intended for the South American market, we currently have no UK/European power supplies or manuals available. Generic 9v 0.7A power supplys are available are available cheaply from retailers such as Tandy or Maplin. Searching the internet often turns up such items at surplus electrical disposal stores.

Long live the ZX81!

zx81 kit technical support

February 8th, 2006

Each kit contains all the necessary parts, including keyboard, case, printed circuit board, resistors, capacitors, connectors, integrated circuits, power supply, cables etc. When completed the computer can be used on UHF Channel 33 of any Black & White or Color TV. It is possible to use the computer on UK (50 hertz) and US (60 hertz) televisions by setting a ‘jumper’ on the circuit board. The kits do not include a manual, so have a look at Books before you order.
Assembly Instructions
Online version of the instructions
Scans of the original assembly instructions (print these off before you build!)
Front cover
Pages 1 2 3 4 5 6 7
Circuit diagram
Circuit diagram

Other books

February 8th, 2006

Retro book cover Do you remember technology?
Provides a look at technologically interesting machines and products, representing the twentieth century, which have become obsolete, back in vogue, or are still in use.

Order online ISBN 0811827720

Other ZX81 books;
Art of Programming the 1K ZX81
Art of Programming the 16K ZX81
Your Timex/Sinclair 1000 and Zx81

Sinclair ZX Spectrum books;
Step by Step Programming ZX Spectrum
Step by Step Programming ZX Spectrum – Book 2
Step by Step Programming ZX Spectrum – Book 3
Step by Step Programming ZX Spectrum – Book 4

VU-CALC And VU-FILE (The Oranizer): Getting Serious With Your Timex/Sinclair

February 8th, 2006

Here’s the book that shows you how to use two fo the most powerful software packages for the Timex/Sinclair-VU-VALC and VU-VILE (The Organizer)! This conciese and crisply writeen guide offers practical “how-to” information to understanding and using these two multi-purpose program- unlike the briefly-documented reference manuals that accompany VU-CALC and VU-FILE.

Robert B.V. Master ISBN 0-89303-941-1

ZX81 BASIC Programming (SPANISH Language Version)

February 8th, 2006

ZX81 basicThis is the Spanish version of the ZX81 programming manual that Sinclair shipped with their kits and computers to South America. Over 200 pages.

Steven Vickers (Traducido y adaptado por INVESTRONICA, S. A.) Sinclair Research Limited

Price 7.99

February 7, 2006

Computer Interfacing Techniques in Science with experiments for Sinclair and Timex / Sinclair computers

February 7th, 2006

experimentsDesigned for use with the ZX81, TS1000, TS1500, or TS2068, the experiments in this book help develop programming and circuit building skills while illustrating important concepts in the physical sciences. Each experiment includes step-by-step directions, a list of necessary components, and easy-to-follow schematics and diagrams. These experiments show how microcomputers can be readily adapted for practical uses in the school, university, home or laboratory.
Readers will also learn how to build input and output ports, convert analog signals to digital input, and generate the control signals used for advanced interfacing. Anyone with a basic understanding of electricity and of the BASIC programming language can quickly learn to measure and control experiments and instrumentation with microcomputers.

Paul E. Field & John A. Davies, Scott, Foresman and Complany, ISBN 0-673-18112-X

Price 14.99

The INS and OUTS of the Timex TS1000 & ZX81

February 7th, 2006

Ins & OutsThe INS and OUTS of the TS1000/ZX81 contains the complete circuit diagram of this amazing computer, as well as a full discussion of the unorthodox methods which are used in making this microcomputer do what it does. The author also includes a number of practical projects to enable you to take full advantage of the system’s hardware including expanding its memory capabilities. This INS and OUTS of the TS1000/ZX81 deals extensively with the hardware aspects of the TS1000/ZX81, and is a must for anyone interested in building their own peripherals for this computer.

Don Thomasson, Melbourne House, ISBN 0- 86161-1187

Price 9.99

BASIC Basics for the Times Sinclair 1500/1000

February 7th, 2006

BASICThis is an excellent way to introduce your family to BASIC on your Timex Sinclair 1500 and ZX-81 computer. You’ll find it filled with useful information — for managing household finances, using your Timex Sinclair as an electronic message board, using the computer as a calculator, solving complicated mathematical problems, and many other applications.

Michael P. Barnett/Simon J. Barnett, Reston Publishing Company, Inc., A Prentice -Hall Company. ISBN 0-8359-0348-6

Price 9.99

Basics of Timex Sinclair 1500/1000 BASIC

February 7th, 2006

An excellent introduction to programming in BASIC on the Timex Sinclair 1500 and ZX-81. You’ll learn about programming techniques, see examples that show you how BASIC commands work, and find out how to write you own programs. This easy-to-read book takes you step-by-step through the BASIC programming language. You’ll be amazed at what you and your Sinclair computer can do!

Allen Wolach, Reston Publishing Company, Inc., A Prentice -Hall Company. ISBN 0-8359-0347-8

Price 9.99GBP

Hello world!

February 7th, 2006


to ZX81kit.co.uk, the best place to shop for Sinclair products. In the store you will find ZX81 KITS to build yourself (imagine – ‘what did you do last night?’ – ‘oh, I just built myself a new computer!), ZX81 and ZX Spectrum compatable PRINTERS, BOOKS relating to Sinclair ZX computers and PERIPHERALS to expand your ZX.

NEW! Other design classics and retro books!