KC 85

The KC 85 ('KC' meaning "Kleincomputer", or "small computer") were models of microcomputers (KC 85/2, KC 85/3 and KC 85/4) built in East Germany by VEB Mikroelektronik "Wilhelm Pieck" Mühlhausen. The first model in the series, the HC 900, originally designed as a home computer and introduced in 1984, was renamed to KC 85/2 in 1985 to de-emphasize its use as consumer good.

KC 85
KC 85/4
Also known as"Kleincomputer"
ManufacturerVEB Mikroelektronik "Wilhelm Pieck" Mühlhausen
TypeMicrocomputer
Release dateHC 900: Q2 1984
KC 85/2: Q2 1985
KC 85/3: Q2 1986
KC 85/4: Q2 1988
Lifespan6 years
Introductory priceKC 85/3: 1700 M
KC 85/4: 4100 M
DiscontinuedHC 900: 1985
KC 85/2: 1986
KC 85/3: 1988
KC 85/4: Q3 1990
Units sold~45.000
MediaCassette tape, floppy disk, expansion modules
Operating systemCAOS [de] (4 KB)
KC 85/3 and KC 85/4: KC-BASIC [de] interpreter in ROM
CPUU880 (Zilog Z80 clone)
Memory32 KB
KC 85/4: 64+64 KB (DRAM)
Display320×256 pixels, per 4 × 8 pixels: 1 of 16 foreground and 1 of 8 background colors
KC 85/4: more colors
Graphicsseries 7400 ICs
Sound2x square wave, 8 volumes, 6 octaves
KC 85/3 and KC 85/4: Buzzer
Power25 W
PlatformK 1520 bus
Dimensions38.5 cm × 27.0 cm × 7.7 cm
(15,2 in x 10.6 in x 2.8 in)
Mass4,1 kg

Despite similar names, the KC 85 computers were not directly related to the KC 87 series produced by VEB Robotron-Meßelektronik "Otto Schön" Dresden.

The availability of the KC 85 series for private customers was very limited. The computers were mostly used at educational institutions, organizations, and enterprises.

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