AKA (Label): Calculator Model EC-490, Catalog Number 65-635, Product number (P/N): 65635 (65-635),
Keywords/Tags: 65635 (65-635) | EC490 (EC-490) | 490
Date of intro: 1975, Origin: Mexico (List), Dimensions: 159x83mm,
Power: Rechargeable,
Display: Type = Display (VFD) (List),
Number of keys: 25, #Key-Brown: 10, #Key-White: 15,
Miscellaneous switch: [DEG-RAD OFF-ON],
Classification: / Pocket,
Featuring: Scientific functions, Square root, PI, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip,
Related with: RADIO SHACK_docu: (Instr.) EC490; RADIO SHACK_docu: 2520D96New675 (Instr.) EC490,
Original Equipment Manufacturer : ROCKWELL: 63R (version-3), Resemblance with: (Resemblance 093), Made by: ROCKWELL (List of all Import-OEM-models for RADIO SHACK),
Known Serial-numbers: 105731 | 108736 | 108809 | 113978 (List of all S/Ns from RADIO SHACK)
Initial Cost Price: USD99.95, Collector value: 7.5/10,
Internet: Link-1: SMITHSONIAN MUSIC