AKA: BLACKJACK, EC-21, AKA (Label): Cat. no. 60-3011, Product number (P/N): 603011 (60-3011),
Keywords/Tags: 603011 (60-3011) | EC21 (EC-21) | BLACKJACK
Date of intro: ~1977, Origin: Taiwan (List), Dimensions: 140x82mm,
Power: 4.5V: (AAA x3), Adaptor: RADIO SHACK_adaptors: 65-735,
Display: Type = Display (VFD) (List), Digits = 12,
Number of keys: 20, #Key-Blue: 7, #Key-Green: 11, #Key-Red: 2,
Miscellaneous switch: [GAME-CALC OFF-ON],
Classification: / Pocket / Games,
Featuring: Square root, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip,
Related with: RADIO SHACK_parts: (Box) EC21,
Main Components: NEC: D1021C,
Resemblance with: COMPEX: BJ21; ENTERPREX: BJ21,
Collector value: 7/10,
Internet: Link-1: MY CALCULATORS DATABASE, Link-2: THE NATIONAL MUSEUM OF AMERICAN HISTORY