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.

1983

Timex/Sinclair 1500

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

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.

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.

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.

1982

Sinclair ZX Spectrum

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

1984

Sinclair QL

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

1987

Cambridge Z88

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

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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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OS-64 is a ROM that supports the Timex/Sinclair’s 64-column mode. It is fully compatible with 32 column commands and functions. The original Zebra manual is available on archive.org. OS-64 is supplied on cartridge. Insert in the TS2068’s cartridge slot (with the power turned off), then turn your computer on. The boot screen will be blackproduct, orig pub: 11.30.19, updated: 03.27.26
ROM image; supports the Timex/Sinclair’s 64-column mode. Fully compatible with 32 column commands and functions.computer_media, orig pub: 06.17.23, updated: 03.27.26
Commented disassembly of the HOME ROM.document, orig pub: 03.27.26, updated: 03.27.26
Definitions for the HOME and EXROM disassemblies.document, orig pub: 03.27.26, updated: 03.27.26
Commented disassembly of the EXROM.document, orig pub: 03.27.26, updated: 03.27.26
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