AKA: Ei minitron 831, Product number (P/N): 831,
Keywords/Tags: 831 | Ei | minitron
Date of intro: ~1975, Origin: Yugoslavia (List), Dimensions: 120x70x24mm, Weight: 130g,
Display: Type = Display (LED) (List),
Number of keys: 20, #Key-Black: 9, #Key-Brown: 11,
Decimal switch: [F-2],
Classification: / Pocket,
Featuring: Procent, Square root, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip,
Resemblance with: (Resemblance 054),
Serie-members: FABRIKA RACUNSKIH MASINA: 831 (LED-version); FABRIKA RACUNSKIH MASINA: 831B (VFD-version),
Known Serial-numbers: 310964 (List of all S/Ns from FABRIKA RACUNSKIH MASINA)
Collector value: 8/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),