Vintage Electronic Calculators:

Overview of Brands


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Product number (P/N): 122PDR,
Keywords/Tags: 122PDR
Date of intro: ~1976, Origin: Japan (List),
Power: AC,
Display: Type = Display (VFD) (List), Digits = 12+1,
Number of keys: 31, #Key-Black: 10, #Key-Grey: 7, #Key-Orange: 2, #Key-White: 12,
Decimal switch: [F-6-3-2-0-ADD], Round switch: [5/4-(Blank)], Miscellaneous switch: [K-(Blank) N/P-(Blank) ICP-(Blank)],
Classification: / Desktop with Display+Printer,
Featuring: Procent, Square root,
Main Components: NEC: D1201C,
Other components: 4069 {2x}; (Unknown manufacturer)_parts(E): BA612 {3x}; TOSHIBA: TM4352P {2x},
Resemblance with: NASCO: NS122PDR,
Known Serial-numbers: J111110 | J111110 (J 111110) (List of all S/Ns from BROTHER)
Collector value: 7/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),


Internals (display) / Internals (keyboard)

Internals (display) / Internals (keyboard)
Z2L (Z-2(L))

Internals (printer) / Internals (power supply)

Internals (printer)

Internals (printer)

Internals (printer)

Internals (printer)

Internals (PCB) / Internals (display)
Z2L (Z-2(L))

Internals (PCB)
Z1 (Z-1)

Internals (PCB)
Z1 (Z-1)

Label, name plate
S/N: J111110 (J 111110)

Created: 05-jun-2016, Manual-update: 04-apr-2017, Batch-update: 29-may-2023             

# Pageloads since 2018: 198             

12 Pic(s),


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