Welcome to TimexSinclair.com, your definitive resource for everything related to the Sinclair and Timex/Sinclair computers in the United States. From the groundbreaking Sinclair ZX81 that brought affordable computing to American homes in 1982, to the Timex/Sinclair 2068, we celebrate these remarkable machines that introduced a generation to the world of programming and digital innovation.

Timex/Sinclair

The American chapter—Timex brought Sinclair’s vision to U.S. homes.

1982

Timex/Sinclair 1000

The U.S. version of the ZX81, available for under $100 at retail stores across America. This machine democratized computing in the United States.

Explore the T/S1000
1983

Timex/Sinclair 1500

Enhanced version of the Timex/Sinclair 1000 with 16K RAM built in, ZX Spectrum style case and keyboard.

Explore the T/S1500
1983

Timex/Sinclair 2068

Color graphics, sound capabilities, and a cartridge port made the 2068 the ultimate U.S. Sinclair experience with serious computing power.

Explore the T/S2068

Sinclair

The pioneering machines from Clive Sinclair that revolutionized home computing.

1980

Sinclair ZX80

The machine that started it all—revolutionary for its price point and brought computing to everyday people.

Explore the ZX80
1981

Sinclair ZX81

The machine that brought computing to the masses. Sold over 1.5 million units worldwide—legendary affordability and hackability made it an icon.

Explore the ZX81
1982

Sinclair ZX Spectrum

The ZX Spectrum brought vibrant color graphics and sound to the home computer market, selling over 5 million units worldwide.

Explore the ZX Spectrum
1984

Sinclair QL

Sinclair’s ambitious 32-bit business computer. Multitasking OS, built-in Microdrives—ahead of its time with professional aspirations.

Explore the QL
1987

Cambridge Z88

Sinclair’s ambitious 32-bit business computer. Multitasking OS, built-in Microdrives—ahead of its time with professional aspirations.

Explore the Z88

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We have a YouTube channel, active email list and more! We meet via Zoom on the first Monday and third Sunday of each month to chat about our favorite computers, projects and more. Each meeting is recorded and posted to YouTube. You can watch some of our most recent meetings below.

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This column is dedicated to you novice programmers to whom BASIC is not so basic. (BASIC is one of the languages your ZX80 understands.) I will also try to simplify concepts in other SYNTAX features so you can get a handle on them and eventually outgrow this column. For-next loops consist of 2 control statements,…article, orig pub: 10.27.20, updated: 06.21.26
Check Herbach & Rademan’s summer bulletin (Vol. 46 No. 5). Stock # 21K731 C$4.50) holds 8 C size cells and needs rewiring and a new output connector. H&R is in Philadelphia (215/426-1700). If you use alkaline C cells , Eveready E-93 or equal, you can operate 2 1/2 to 6 hours .article, orig pub: 10.27.20, updated: 06.21.26
In TS-Horizons #5 it was mistakenly reported that Johnson’s and Swartz’s graphics program for the TS1000/ZX81 would run on the TS 2068. Below is a version of the original program which will run on the TS 2068. Provided by John Marion. Some readers had questions about the program as it originally appeared in T-S Horizons…article, orig pub: 11.05.25, updated: 06.21.26
Here is a list of vendors who are more or less active in selling Sinclair equipment, software or services. The list is presented as a service to the reader. It is difficult to keep up with the activities of vendors because their interests (and stock) are continually changing; however I have seen some indication of…article, orig pub: 01.16.26, updated: 06.21.26
Here is a short listing you might find useful. I developed it after trying to find the mistakes, and there were several, in a 12K long program that I hand-loaded from a magazine listing. My eyes could not take the strain of staring at the TV and then the listing, back and forth over and…article, orig pub: 08.02.25, updated: 06.21.26
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