Vintage Electronic Calculators:

Overview of Brands


APF: 85
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AKA: MARK 85, AKA (Label): MODEL NO: MARK 85, 7545, Product number (P/N): 85,
Keywords/Tags: 85 | MARK 85
Date of intro: ~1975, Origin: Japan (List),
Power: 4.5V + Adaptor, Adaptor: APF_adaptors: 751S,
Display: Type = Display (VFD) (List),
Number of keys: 23, #Key-Grey: 2, #Key-Orange: 10, #Key-White: 11,
Miscellaneous switch: [off-on],
Classification: / Pocket,
Featuring: Procent, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip, Memories: 1,
Known Serial-numbers: MT027913 (MT-027913) (List of all S/Ns from APF)
Collector value: 7/10,
Internet: Link-1: SMITHSONIAN MUSIC, Link-2


Operating Instructions

Label, name plate
S/N: MT027913 (MT-027913)

Created: 28-jul-2001, Manual-update: 08-mar-2019, Batch-update: 21-mar-2023             

# Pageloads since 2018: 17             

3 Pic(s),


If you have a (better) personal picture and/or missing info about any model not listed: Please do send a Mail