AKA: Checkmaster, Product number (P/N): 525,
Keywords/Tags: 525 | Checkmaster
Date of intro: 1975, Origin: USA (List), Dimensions: 175x85x23mm, Weight: 150g,
Power: 9V: (AA x6),
Display: Type = Display (LED) (List), Digits = 6,
Number of keys: 14,
Miscellaneous switch: [ON-(Blank)],
Classification: / Pocket / Financial+Business (cheques),
Featuring: Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip,
Related with: CORVUS_parts: (Box) 525,
Main Components: MOSTEK: MK6225N,
Known Serial-numbers: 5250040380 (525.0040380) (List of all S/Ns from CORVUS)
Initial Cost Price: USD29.95, Collector value: 8/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),
Internet: Link-1: VINTAGE CALCULATORS WEB MUSEUM, Link-2: DATAMATH CALCULATOR MUSEUM