Product number (P/N): EC420,
Keywords/Tags: EC420 | 420
Date of intro: ~1977,
Display: Type = Display (VFD) (List), Digits = 8+1,
Number of keys: 28, #Key-Black: 11, #Key-Grey: 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,
Serie-members: RADIO SHACK: EC420 (version-1) (Brown/Black); RADIO SHACK: EC420 (version-2) (Silver/Black),
Collector value: 7/10,