The ZX81 is a home computer developed by Sinclair Research and manufactured in Dundee, Scotland, by Timex Corporation. It was launched in the United Kingdom in March 1981 as the successor to …

The Sinclair ZX81, developed by Sinclair Research and manufactured by Timex Corporation in Dundee, Scotland, was the first home computer sold in the United States for under $150.

The ZX81 has the same microprocessor and runs at the same speed as the ZX80, but it has a better BASIC programming language and is cheaper to produce, due to having fewer chips and a simpler …

Discover classic Sinclair ZX81 computers, including rare Timex Corp. models and software tapes. Relive the nostalgia. Shop Vintage on eBay!

Aug 12, 2025 · The ZX81 +38 is a modernized reconstruction of the 1981 Sinclair ZX81, combining retro aesthetics with practical upgrades for enhanced usability and reliability.

The ZX81 was launched on 5th March 1981 by Clive Sinclair as the successor to the ZX80, with a larger memory and improved mathematical functions. It was available ready-built (£69.95) or in kit form …

Along the way, I’ll talk about the history of the ZX81, my own childhood experiences with it, and what makes this build so special.

Mar 20, 2025 · The ZX81, released by Sinclair Research in 1981, was a groundbreaking home computer that played a significant role in popularizing personal computing. It was the successor to the popular …

The Sinclair ZX81 was the third microcomputer built by Sinclair but it had limited functionality. It appeared on the market at the right time, though, and enjoyed much popularity. Sinclair teamed with …

Aug 6, 2024 · Like most almost every home computer of the era, the ZX81 launches directly into BASIC, and its particular flavour is somewhat idiosyncratic. It’s based on a “keyword system”, where BASIC …