AKA: BJ-21M, Product number (P/N): BJ21M (BJ-21M),
Keywords/Tags: BJ21M (BJ-21M)
Date of intro: ~1979, Origin: Taiwan (List),
Display: Type = Display (LCD yellow) (List),
Number of keys: 24, #Key-Black: 1, #Key-Brown: 10, #Key-Red: 2, #Key-White: 11,
Keyboard Array (Rows x Columns): 05x05,
Classification: / Pocket / Games,
Featuring: Procent, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip,
Known Serial-numbers: 004000 (List of all S/Ns from ENTERPREX)
Collector value: 7/10,