CER 22

Updated on Dec 09, 2024

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CER (Serbian: Цифарски Електронски Рачунар – Digital Electronic Computer) model 22 was a transistor based computer developed by Mihajlo Pupin Institute (Serbia) in 1967-1968. It was originally intended for banking applications and was used for data processing and management planning in banks, trade and utility companies in Belgrade. Three CER-22 computers were purchased by Beobanka, Jugopetrol and BVK–Belgrade companies. (For more details see: Ref.# 1, #2, #3, and #4).

The principal designers and chiefs of the project teams were:

Dušan Hristović, Svetomir Ojdanić, Veselin Potić, Radivoje Ilić et al. for Beobanka;

Dr Sc. Miroslav Jocković, Branimir Leposavic, Michael Savikin, Ljubivoje Marković et al., for Jugopetrol co.;

Vladislav Paunović, Miloš Marjanović, Petar Vrbavac, Dragiša Tinković et al. for BVK-Belgrade.

Technical characteristics of the CER-22

Technology: IC (MSI), transistor and diode logic circuits (See also: Ref. #2, #5, #6).

Printed circuits boards with the ribbon connectors;

CPU performance: the 16-cycle instructions (10 microseconds);

Magnetic core memory: 32 KB capacity (memory cycle time of 2 microseconds);

Disk storage CDC-854 (max 8 disk units);

Card reader and puncher: 300 cards/min and 150 cards/min;

Paper tape reader and puncher, type "Facit": 1000 characters/s and 150 characters/s;

Parallel Line Printer, type DP MZ-4: 128 characters/line, 600 lines/min.

References

CER-22 Wikipedia

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