AKA: checkmate 1740, AKA (Label): checkmate 1740B, Product number (P/N): 1740B,
Keywords/Tags: 1740B | checkmate
Date of intro: ~1975, Origin: Malaysia (List), Dimensions: 165x81x25mm, Weight: 120g,
Power: 4.5V: (AA x3) + Adaptor, Adaptor: LITRONIX_adaptors: 102; LITRONIX_adaptors: 104,
Display: Type = Display (LED) (List), Digits = 8+1,
Number of keys: 25, #Key-Black: 11, #Key-Brown: 4, #Key-Orange: 2, #Key-Red: 8,
Classification: / Pocket,
Featuring: Procent, Square root, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip, Memories: 1,
Known Serial-numbers: 052747 | 053028 (List of all S/Ns from LITRONIX)
Collector value: 7.5/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),