Product number (P/N): 312,
Keywords/Tags: 312
Date of intro: 197?, Origin: Hong Kong (List),
Power: AC,
Display: Type = Display (VFD) (List),
Number of keys: 29, #Key-Brown: 14, #Key-White: 13, #Key-Yellow: 2,
Decimal switch: [+-F-0-2-4-6], Round switch: [5/4-(ArrowDown)], Miscellaneous switch: [NP-(Blank) (Blank)-GT],
Classification: / Desktop with Display+Printer,
Featuring: Procent, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip,
Certification: 975T(UL) (List All UL's),
Serie-members: NATIONAL SEMICONDUCTOR: 312 (High keys); NATIONAL SEMICONDUCTOR: 312A (Low keys),
Known Serial-numbers: 105240 (List of all S/Ns from NATIONAL SEMICONDUCTOR)
Collector value: 7/10,