AKA: MARK 90, AKA (Label): MODEL NO: MARK 90, Product number (P/N): 90,
Keywords/Tags: 90
Date of intro: ~1976, Origin: Japan (List),
Power: Rechargeable, Adaptor: APF_adaptors: 751S,
Display: Type = Display (LED) (List), Digits = 8+1+(2+1),
Number of keys: 45, #Key-Blue: 13, #Key-Brown: 17, #Key-White: 15,
Miscellaneous switch: [LD-CLR-RUN ON-OFF],
Classification: / Pocket,
Featuring: Scientific functions, Procent, Square root, PI, Programmable, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip, Memories: 10, Programmable Steps: 72,
Related with: (Docu_Articles): 197703: Electronic calculators get better and better,
Original Equipment Manufacturer : COMMODORE: PR100 (List of all Export-OEM-models from APF), Resemblance with: HIRADASTECHNIKA SZOVETKEZET: PTK1072-1, Made by: COMMODORE (List of all Import-OEM-models for APF),
Known Serial-numbers: A006277 (A-006277) (List of all S/Ns from APF)
Collector value: 8/10,