Vintage Electronic Calculators:

Overview of Brands


MBO: 121MR
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AKA: 121-MR, AKA (Label): Modell: 121-MR, Bestell nr: 0527, Product number (P/N): 527,
Keywords/Tags: 527 | 121MR (121-MR)
Date of intro: ~1975, Origin: Japan (List), Dimensions: 170x120x33mm, Weight: 280g,
Power: 6V: (AA x4) + Adaptor,
Display: Type = Display (VFD) (List), Digits = 12,
Number of keys: 26, #Key-Grey: 13, #Key-Orange: 2, #Key-White: 11,
Decimal switch: [6-4-3-2-1-0], Round switch: [F-CUT-5/4], Miscellaneous switch: [N-(Sigma)],
Classification: / Desktop with Display,
Featuring: Procent, Square root, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip,
Original Equipment Manufacturer : CASIO: 121MR, Resemblance with: CASIO: 121MR, Made by: CASIO (List of all Import-OEM-models for MBO),
Collector value: 7/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),



Label, name plate

Created: 05-jul-2011, Manual-update: 11-feb-2018, Batch-update: 04-dec-2022             

# Pageloads since 2018: 15             

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