Sinclair ZX81
| Sinclair ZX81.jpg | |
| Sinclair ZX81 | |
| Specifications | |
|---|---|
| Developer | Sinclair Research |
| Manufacturer | Unknown |
| Type | Home computer |
| Released | March 1981 |
| Discontinued | 1984 |
| CPU | Zilog Z80A |
| Memory | 1 KB (expandable to 16 KB) |
| Storage | Tape cassette |
| Display | 32×24 characters (monochrome) |
| Sound | — |
| Dimensions | 23 cm × 14 cm × 4 cm |
| Weight | 0.68 kg |
| OS / Firmware | — |
| Successor | Sinclair ZX Spectrum |
Overview
The Sinclair ZX81 is an 8-bit home computer released by Sinclair Research in March 1981. It was one of the first affordable computers for the home user, making computing accessible to a wider audience. The ZX81 was notable for its compact design and its use of a simple, yet powerful programming language, Sinclair BASIC.
Technical Specifications
The ZX81 is powered by a Zilog Z80A CPU and originally comes with 1 KB of RAM, which can be expanded to 16 KB. It uses a tape cassette for storage and has a monochrome display capable of showing 32×24 characters. The computer is operated through a membrane keyboard, which was a cost-effective solution at the time.
Features
The ZX81 features a minimalist design, with a focus on affordability and ease of use. Its operating system, Sinclair BASIC, allows users to write simple programs and perform calculations. The ZX81 also supports various peripherals, including printers and additional memory packs.
Legacy
The Sinclair ZX81 is often credited with helping to kickstart the home computing revolution in the early 1980s. Its low price and ease of use made it a popular choice among hobbyists and educators. The ZX81 laid the groundwork for its successor, the Sinclair ZX Spectrum, which would further popularize home computing.