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Tangerine Computer Systems was a British
microcomputer A microcomputer is a small, relatively inexpensive computer having a central processing unit (CPU) made out of a microprocessor. The computer also includes memory and input/output (I/O) circuitry together mounted on a printed circuit board (P ...
company founded in 1979 by Dr. Paul Johnson, Mark Rainer and Nigel Penton Tilbury in St. Ives,
Cambridgeshire Cambridgeshire (abbreviated Cambs.) is a Counties of England, county in the East of England, bordering Lincolnshire to the north, Norfolk to the north-east, Suffolk to the east, Essex and Hertfordshire to the south, and Bedfordshire and North ...
. The very first product was the successful TAN1648 VDU kit which received much acclaim in the technical press. The home computer market was beginning to move, albeit slowly, and it was essential to establish a presence. Development and expansion was imperative. It was decided that the latter two partners would relinquish their involvement in order to focus on their consultancy work. Barry Muncaster became involved operationally and the company moved to new premises in
Ely Ely or ELY may refer to: Places Ireland * Éile, a medieval kingdom commonly anglicised Ely * Ely Place, Dublin, a street United Kingdom * Ely, Cambridgeshire, a cathedral city in Cambridgeshire, England ** Ely Cathedral ** Ely Rural District, a ...
,
Cambridgeshire Cambridgeshire (abbreviated Cambs.) is a Counties of England, county in the East of England, bordering Lincolnshire to the north, Norfolk to the north-east, Suffolk to the east, Essex and Hertfordshire to the south, and Bedfordshire and North ...
. The company was later renamed, and was known as Oric Products International.


Early years: Microtan 65

Tangerine produced one of the first
6502 The MOS Technology 6502 (typically pronounced "sixty-five-oh-two" or "six-five-oh-two") William Mensch and the moderator both pronounce the 6502 microprocessor as ''"sixty-five-oh-two"''. is an 8-bit microprocessor that was designed by a small te ...
-based kit computers, the Microtan 65. It had a 3 U form factor, a small amount of