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.

Welcome to Timex/Sinclair.com
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

Join Us Online

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 informal group has twice a month meetings online (via Zoom). Like in-person user group meetings, we have guests, talk about our projects and a wide array of computing topics. This group has its origins in the Yahoo TS 2068 Group, which migrated to groups.io when Yahoo Groups shut down. Join Our Email List Sign…usergroup, orig pub: 04.21.23, updated: 12.07.25
We discussed shared community history and technical knowledge. We talked about the evolution of user groups from 1980s, who often had printed newsletters (CATS, Update, Chicago-area publications), through Yahoo groups to current online forums.video, orig pub: 11.17.25, updated: 12.06.25
Overview The TS2000 series of computers claims an extensive group of features of hardware and software. The machines feature 24K ROM. The TS2048 has 16K RAM at its disposal while the TS2068 wields a well-utilized 48K RAM. CPU and Operating System The TS2000 uses a Z80A microprocessor running at 3.5MHz. It contains a few buffers,…article, orig pub: 10.27.20, updated: 11.30.25
In the time that I’ve been doing the QHJ I have received responses like “good job”, “nice work”, but very little actual comments (good or bad) on the overall content of the QHJ. In thinking of what to put into this issue, the idea of a reader survey popped in to my head. I am…article, orig pub: 11.30.25, updated: 11.30.25
Back in QHJ #13 I have a cursory review of the Prolog interpreter written by Hans Lub. I said that when I found the book that the interpreter was based upon, I could look into it further. Well, I found the book; The Art of Prolog by Sterling and Shapiro. Even though Hans described the…article, orig pub: 11.30.25, updated: 11.30.25
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