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Timex Sinclair was a joint venture between the British company Sinclair Research and Timex Corporation in an effort to gain an entry into the rapidly growing early-1980s home computer market in North America. The choice of partnership was natural, as Timex was already the main contractor for manufacture of Sinclair's ZX81 and ZX Spectrum computers at its Scottish plant in Dundee. It was Timex of Portugal, though, that took on the R&D and the local manufacturing of the models to be exported to the U.S. Although both Timex of Scotland and Timex of Portugal were full subsidiaries of Timex, internal rivalry, whether unintended or purported, meant there was little sharing between the two plants. Timex of Portugal also sold the Timex Sinclair models in Portugal and Poland under the Timex Computer brand.
Timex Sinclair released four computers, all of them based (to some extent) on Sinclair Research's existing machines. In chronological order:
- TS1000, essentially a modified ZX81 with 2 KB RAM
- TS1500, a TS 1000 with 16 KiB RAM and a ZX Spectrum-like case and keyboard
- TS2068, a ZX Spectrum-based machine with enhancements, namely a cartridge port to make it compete with videogame consoles, which resulted in poor compatibility with software developed for the original. Its European sibling, the TC2068, featured improved compatibility with the ZX Spectrum.
- TC2048, a ZX Spectrum-based machine with a TS 2068-like keyboard. Not sold in the US.
The Timex Sinclair 1000 was introduced in July 1982, with Timex Sinclair touting it as the first home computer to cost under $100 in the U.S. market. In spite of the flaws in the early versions, half a million units were sold in the first six months alone. Overall, the machines were nowhere near as successful as their UK progenitors; in contrast with the ZX Spectrum, which was the best-selling computer in Britain at the time, the TS2068 was a relative failure, due to Timex leaving the computer business prior to the introduction of the TS2068 (and TS 1500).
Timex Corporation withdrew from the U.S. home computer market in February 1984 but Timex of Portugal continued to manufacture, sell and develop hardware in Portugal and Poland for another ten years.
- TC3256 was the next proposed computer. It was designed as the third generation of Timex Computer Technology, but it vanished when Timex of Portugal shut down its production line.
- Timex FDD or FDD 3000, a Z80-based CP/M-compatible computer. Most people only know it as a floppy disk drive controller but in fact, it is a computer without graphics circuitry. The FDD or FDD 3000 could be used in three different ways:
- as a disk drive controller for a TC2048/2068 or ZX Spectrum, running TOS (Timex Operating System)
- as a CP/M system, using a TC2048/2068 computer running the Timex Terminal Emulator as a console.
- as a CP/M system, using the Timex Terminal 3000, a terminal keyboard, as a console.
Timex Sinclair produced the following peripherals for the Timex computer line:
- TS1016 - Timex 16K RAM Pack for use on a TS1000. Can be used on a TS1500.
- TS1050 - Not a real peripheral, but a "suitcase" to carry TS1000, tapes and peripherals
- TS1510 - A cartridge player for TS1500. It can be used on TS1000 with a 16K RAM Pack
- TS2020 - Analog Tape Recorder
- TS2040 - Thermal Printer
- TP2040 - Thermal Printer (badging variation, with "Printer" instead of "Sinclair")
- TS2050 - Communications Modem
- TS2060 - Bus Expansion Unit (vaporware)
- TS2065 - Timex Microdrives (vaporware)
- TS2080 - 80 column dot matrix printer (vaporware)
- TS2090 - Joystick to be used on TS2068 internal ports
Timex Computer (TMX Portugal) produced the following peripherals for the Timex computer line:
- TS1040 - A multi-voltage power supply (printer + tape recorder (TS2020) + TS1000 + TC2048/2068)
- TC2010 - A digital tape recorder
- TC2080 - A serial 80 column dot matrix printer
- Timex FDD - A "cut down" computer that can be used as a floppy disk controller
- Timex FDD3000 - A "cut down"computer that can be used as a floppy disk controller (an upgraded Timex FDD)
- Timex Terminal 3000 - A "cut down"computer to be used as a CP/M terminal with FDD3000
- Timex RS232 - A serial RS232 interface
- Sound/Joystick Unit - A sound amplifier for SLCD sounds and Kempson(?) Joystick Interface
TMX Portugal also sold the TS2040 and later renamed it to Timex Printer 2040.
To export the Timex Computer to Poland (as the Unipolbrit UK2086), Timex of Portugal had to be paid in goods. It chose to import the Neptun 156 12" green monochrome monitor, manufactured in Poland by Unimor company. Based on the Vela TV receiver, it proved very popular in Portugal and was frequently sold in bundles with the TC computers.
TMX Portugal sold/developed the following software:
- TOS - Operating system for the FDD/FDD3000 known as Timex Operating System
- CP/M for FDD3000 - Advanced operating system for the FDD3000
- Basic 64 - Basic extensions for the extra video modes
- Timeword - A word processor in cartridge that can save to TOS disks or to a tape recorder