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RADIO SHACK: EC425
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AKA (Label): EC-425 Calculator, Product number (P/N): EC425 (EC-425),
Keywords/Tags: EC425 (EC-425) | EC425 (EC-425) | Calculator
Date of intro: 1974, Origin: USA (List), Dimensions: 152x76x40mm, Weight: 170g,
Power: Rechargeable, Adaptor: TEXAS INSTRUMENTS_adaptors: AC9200,
Display: Type = Display (LED) (List), Brand = BOWMAR: Optostic,
Keyboard: KLIXON, Number of keys: 23, #Key-Blue: 1, #Key-Beige: 10, #Key-White: 12,
Classification: / Pocket,
Featuring: Square root, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip,
Related with: RADIO SHACK_docu: (Instr.) EC425,
Main Components: TEXAS INSTRUMENTS: TMS0120NC,
Other components: TEXAS INSTRUMENTS: SN27423 {2x}; TEXAS INSTRUMENTS: SN75493 {2x},
Original Equipment Manufacturer : TEXAS INSTRUMENTS: SR10 (version-1), Resemblance with: (Resemblance 001), Made by: TEXAS INSTRUMENTS (List of all Import-OEM-models for RADIO SHACK),
Known Serial-numbers: 010737 | 015921 | 016423 | 018767 | 021113 | 027324 | 028150 | 029498 | 037547 (List of all S/Ns from RADIO SHACK)
Initial Cost Price: USD79.95, Collector value: 8/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),
Internet: Link-1: DATAMATH CALCULATOR MUSEUM

Item

Box

Perspective, profile view

Internals
S/N: 016423

Label, name plate / Examples of use / Bottom
S/N: 015921

Created: 26-may-2014, Manual-update: 30-jun-2019, Batch-update: 14-jan-2022             

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5 Pic(s),

                     

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