AKA: mini handy 80M, Product number (P/N): 80M,
Keywords/Tags: 80M | mini handy
Date of intro: ~1974, Origin: Japan (List), Dimensions: 127x70x22mm, Weight: 95g,
Power: 9V + Adaptor,
Display: Type = Display (LED) (List), Digits = 8+1,
Number of keys: 20,
Decimal switch: [F-4-2-ADD], Miscellaneous switch: [N-M],
Classification: / Pocket,
Featuring: Procent, Logic-technology: VLSI (Very Large Scale Integration), calculator-on-a-Chip, Memories: 1,
Components: 3 Diode(s), 1 Transistor(s), 1 IC(s),
Main Components: ROCKWELL: A4130,
Other components: TOSHIBA: T1347,
Serie-members: UNITREX: 80M (version-1) (Black/Silver); UNITREX: 80M (version-2) (White, also Orange Keys); UNITREX: 80M (version-3) (White); UNITREX: 80M (version-4) (Brown/Black),
Known Serial-numbers: A57H47417 | A57K63843 (List of all S/Ns from UNITREX)
Collector value: 7.5/10,
Courtesy of: CALCUSEUM (Serge DEVIDTS),
Internet: Link-1: EARLY ELECTRONIC CALCULATOR TECHNOLOGY REFERENCE