AKA: MK 57B, Product number (P/N): MK57B (MK 57B),
Keywords/Tags: MK57B (MK 57B)
Date of intro: ~1992, Origin: USSR (List), Dimensions: 153x76x25mm, Weight: 130g,
Power: 4.5V + Adaptor,
Display: Type = Display (VFD) (List), Digits = 8+2,
Number of keys: 25, #Key-Black: 24, #Key-Red: 1,
Classification: / Pocket,
Featuring: Procent, Square root, Memories: 1,
Known Serial-numbers: 842998 (List of all S/Ns from ELEKTRONIKA)
Initial Cost Price: RUB23, Collector value: 7/10,
Internet: Link-1, Link-2: SOVIET DIGITAL ELECTRONICS MUSEUM