Vintage Electronic Calculators:

Overview of Brands


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AKA: (ET912), Product number (P/N): 816264 (816/264),
Keywords/Tags: 816264 (816/264) | 812
Date of intro: 1972, Origin: Hong Kong (List), Dimensions: 145x75x30mm, Weight: 186g,
Power: 9V + Adaptor,
Display: Type = Display (LED: DIL-module) (List), Digits = 8+1,
Keyboard: KLIXON, Number of keys: 17, #Key-Black: 16, #Key-Red: 1,
Decimal switch: [D_2-0], Miscellaneous switch: [ON-(Blank)],
Classification: / Pocket,
Featuring: Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip,
Related with: (Docu_Articles): 197402: Le Guide Pratique Des Calculatrices de Poche,
Main Components: CAL-TEX: CT5002,
Other components: RCA: CA3081; TEXAS INSTRUMENTS: SN75492N {2x}; TEXAS INSTRUMENTS: 1KS116,
Resemblance with: (Resemblance 001),
Known Serial-numbers: 114398 | 161815 | 19092 | 65732 | 74720 (List of all S/Ns from CALTRONIC)
Initial Cost Price: USD77.77, Collector value: 8.5/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),
Info: From DUDEK Emil:
Early bulky basic calculator with archaic functions but sturdily built. The logic is pants with limited decimals, strange 12 digit calculations and numerous bugs.
The original black plastic cover is side-bottom-side zip case with Caltronic 812 embossed on the front.
The inside is lined with purple felt with Caltronic 812 in framed silver testament to the high price no doubt. It also has a black plastic, purple felt lines carry strap.



Internals (PCB)

Internals (PCB bottom)

Label, name plate / Examples of use / Bottom

Protection (pouche)

Created: 12-may-2014, Manual-update: 09-aug-2020, Batch-update: 25-feb-2024             

# Pageloads since 2018: 422             

5 Pic(s),


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