AKA: CHECKMATE, (Checkmate II ?), AKA (Label): MODEL 1100, POCKET CALCULATOR, Product number (P/N): 1002,
Keywords/Tags: 1002 | CHECKMATE
Date of intro: ~1973, Origin: Malaysia (List), Dimensions: 140x76x32mm, Weight: 160g,
Power: 7.5V: (AA x5) + Adaptor,
Display: Type = Display (LED: DIL-module) (List), Digits = 8+1, Extra Display features: Type = Display (LED: as bulb) (List), Quantity = 1,
Keyboard: KLIXON, Number of keys: 17, #Key-Black: 16, #Key-Red: 1,
Decimal switch: [D_2-4], Miscellaneous switch: [(Blank)-ON],
Classification: / Pocket,
Featuring: Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip,
Main Components: LITRONIX: 6506003A; TEXAS INSTRUMENTS: 1KS116,
Resemblance with: (Resemblance 001),
Serie-members: LITRONIX: 1002 (version-1) (WILD ROVER-keyboard, 'CHECKMATE'-notation on dark background); LITRONIX: 1002 (version-3) (KLIXON-keyboard, 'CHECKMATE'-notation on dark background); LITRONIX: 1002 (version-2) (KLIXON-keyboard, 'CHECKMATE'-notation on Silver background),
Known Serial-numbers: 10066 | 31491 | 33220 (List of all S/Ns from LITRONIX)
Collector value: 8/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),
Internet: Link-1