AKA: Berkey 4000, Product number (P/N): 4000,
Keywords/Tags: 4000 | Berkey
Date of intro: ~1974,
Display: Type = Display (Gas disharge) (List), Digits = 8+1, Extra Display features: Type = Display (LED: as bulb) (List), Quantity = 2,
Number of keys: 24, #Key-Black: 1, #Key-Blue: 8, #Key-White: 15,
Indicators: Low Chg.,
Classification: / Pocket,
Featuring: Procent, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip,
Collector value: 8/10,

!!! This item is WANTED to join the collection !!!