BMS-203

CER-203 is a central unit of early digital computer developed by Mihajlo Pupin Institute (Serbia) in 1971. It contained both central processing unit and primary memory.

Specifications
Central Processing Unit:
 * Number of instructions: 32
 * Performance:
 * one 16-cycle instruction: 20 μs
 * one single cycle instruction: 5 μs
 * addition and/or subtraction of two 15-digit numbers: 20 μs

Primary memory:
 * Capacity: 8 kilowords
 * Speed (cycle time): 1 μs
 * Complete, autonomous memory error checking
 * Parity control