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 …

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 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 …

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 …

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 …

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.

Sep 7, 2025 · The ZX81 was a home computer released in the United States in a slightly modified form from the Timex Sinclair 1000. The ZX81 was produced by Sinclair Research and …

The ZX81 ROM was 8 KB in size (double that of the ZX80), and contained an updated BASIC interpreter complete with floating-point and trigonometric capability, plus new commands to …

Jun 22, 2025 · Enter the Sinclair ZX81, a small, inexpensive machine that opened the door to home computing for thousands of people. Released in 1981, it was the successor to the ZX80 …

The Sinclair ZX81, also marketed as the Timex Sinclair 1000 in the US, was a home computer introduced in the UK in 1981. It featured an 8-bit Zilog Z80 CPU (from which the name of the …