I have two main units and power.
type computer
country Finland
year 1982
os basic
cpu CDP-1802A
speed 3,58 MHz
ram 9 KB
rom ? KB
graphic 80×72
colors ?
sound 1 channels
ports tv rf, video (din5) cassette (din5), Centronics, expansion
The Telmac TMC-600 — Finland’s Only Home Computer
The Telmac TMC-600, introduced in 1982 by Telercas Oy, holds the remarkable distinction of being the only commercially available BASIC-based home computer ever designed and manufactured in Finland. Using an RCA CDP1802A processor at 3.579 MHz with 8 KB of RAM and 16 KB of ROM containing the Telercas SBASIC interpreter, only 600 units were produced — making surviving examples genuinely rare today. The TMC-600’s design was related to the Dutch COMX-35 and Yugoslav Pecom 64, all sharing a common heritage in Quest Super BASIC running on the RCA 1802 architecture.
Finland’s Unique Computing Heritage
The TMC-600 occupies a unique position in Finnish computing history — not the Nokia MikroMikko (which was an IBM PC-compatible business computer) nor the Telmac 1800 (a kit computer for enthusiasts), but specifically the only Finnish-designed, Finnish-manufactured home computer with a BASIC interpreter intended for mainstream home use. Its production run of just 600 units reflects the commercial difficulty of competing in the home computer market against Sinclair, Commodore, and Atari, but its existence demonstrates Finland’s engineering capability to produce original computer designs independently of the major international manufacturers.
Only 600 Units
The production figure of just 600 TMC-600 units makes it one of the rarest commercially produced European home computers. The machine’s limited distribution — primarily through Finnish electronics retailers — meant it never achieved the market presence that might have made it economically viable to continue production. Today, working TMC-600s are extraordinarily rare, and the Computer Museum Ata’s example is a nationally significant artefact of Finnish technology history.