AKA (Label): CAT. NO. 65-636A, MODEL EC-420, Product number (P/N): 65636A (65-636A),
Keywords/Tags: 65636A (65-636A) | EC420 | 420
Date of intro: 1977, Origin: Taiwan (List), Dimensions: 83x70mm,
Power: 3V: (AA x2) + Adaptor,
Display: Type = Display (VFD) (List), Digits = 8+1,
Number of keys: 28, #Key-Black: 11, #Key-Brown: 4, #Key-Red: 2, #Key-White: 11,
Miscellaneous switch: [POWER_OFF-ON],
Classification: / Pocket,
Featuring: Procent, Square root, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip, Memories: 1,
Related with: RADIO SHACK_parts: (Box) EC420,
Serie-members: RADIO SHACK: EC420 (version-1) (Brown/Black); RADIO SHACK: EC420 (version-2) (Silver/Black),
Known Serial-numbers: 02904212A6 (029042, 12A6) (List of all S/Ns from RADIO SHACK)
Collector value: 7/10,
Internet: Link-1: WIKIMEDIA