Vintage Electronic Calculators:

Overview of Brands


MBO: 20 (Monarch 20)
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AKA (Label): Elektronenrechner, Model: MONRACH 20, Product number (P/N): Monarch,
Keywords/Tags: Monarch | 20
Date of intro: 1975, Origin: Japan (List),
Power: 3V: (AA x2) + Adaptor, Adaptor: MBO_adaptors: BV62,
Display: Type = Display (VFD) (List), Digits = 8+1,
Number of keys: 24, #Key-White: 11, #Key-Yellow: 13,
Miscellaneous switch: [ON-(ArrowRight)],
Classification: / Pocket,
Featuring: Procent, Square root, PI, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip,
Resemblance with: (Clones 012),
Known Serial-numbers: 012100 (List of all S/Ns from MBO)
Collector value: 7/10,
Internet: Link-1: SCHLEPPTOPS Rechnerwiki


Created: 11-mar-2015, Manual-update: 23-jul-2019, Batch-update: 06-aug-2022             

# Pageloads since 2018: 5             

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