AKA: exactra 21, Product number (P/N): EX21 (EX-21),
Keywords/Tags: EX21 (EX-21) | exactra | 21
Date of intro: jul-1974, Origin: USA (List),
Display: Type = Display (LED) (List),
Number of keys: 18, #Key-White: 18,
Miscellaneous switch: [(Blank)-ON],
Classification: / Pocket,
Featuring: Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip,
Main Components: TEXAS INSTRUMENTS: TMS0803NC,
Other components: TEXAS INSTRUMENTS: SN27882,
Known Serial-numbers: 2100008316 | 2100018758 | 2100025252 | 2100068918 | 2100171223025 (2100 171223, 025) | 2100172887 | 2100180727 | 2100183595 | 2100184951 | 2100281986 | 2100296884 | 2100323400 | 2100335432 (List of all S/Ns from TEXAS INSTRUMENTS)
Collector value: 7.5/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),
Internet: Link-1: DATAMATH CALCULATOR MUSEUM