Vintage Electronic Calculators:

Overview of Brands


APF: 121
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AKA: MARK 121, AKA (Label): MARK 121, PRINTING CALCULATOR WITH DISPLAY, Product number (P/N): 121,
Keywords/Tags: 121 | MARK 121 | 7J353
Date of intro: ~1977, Origin: Hong Kong (List),
Power: AC,
Display: Type = Display (VFD) (List), Digits = 12+1,
Number of keys: 29, #Key-Grey: 15, #Key-Red: 2, #Key-White: 12,
Keyboard Array (Rows x Columns): 05x07,
Decimal switch: [A-0-2-F], Miscellaneous switch: [P-NP (Blank)-ACC OFF-ON],
Classification: / Desktop with Display+Printer,
Featuring: Procent, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip,
Known Serial-numbers: 05362 (List of all S/Ns from APF)
Collector value: 7/10,
Courtesy of: BONANZA,


Created: 16-aug-2017, Manual-update: 07-sep-2022, Batch-update: 23-mar-2023             

# Pageloads since 2018: 24             

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