AKA (Label): Cat. No. 65-609, Model EC-221, Product number (P/N): 65609 (65-609),
Keywords/Tags: 65609 (65-609) | EC221 | 221
Date of intro: 1977, Origin: Hong Kong (List), Dimensions: 133x70x24mm, Weight: 80g,
Power: 9V + Adaptor, Adaptor: RADIO SHACK_adaptors: 65-731,
Display: Type = Display (LED) (List), Digits = 8+1,
Number of keys: 19, #Key-Blue: 6, #Key-Red: 2, #Key-White: 11,
Miscellaneous switch: [ON-OFF],
Classification: / Pocket,
Featuring: Procent, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip,
Related with: RADIO SHACK_parts: (Box) EC221,
Resemblance with: (Resemblance 006),
Known Serial-numbers: 127482 | 164450 | 73504 | 98543 (List of all S/Ns from RADIO SHACK)
Collector value: 7.5/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),
Internet: Link-1: THE NATIONAL MUSEUM OF AMERICAN HISTORY