AKA (Label): MODEL MC 840, Product number (P/N): MC840 (MC 840),
Keywords/Tags: MC840 (MC 840)
Date of intro: 1972, Origin: Japan (List),
Display: Type = Display (VFD) (List), Digits = 8+1,
Number of keys: 18, #Key-Black: 15, #Key-Blue: 3,
Keyboard Array (Rows x Columns): 04x06,
Classification: / Desktop with Display,
Featuring: Logic-technology: LSI (Large Scale Integration), calculator-chipset,
Related with:
(Docu_Mags): 197303: POPULAR SCIENCE,
Main Components: OMRON: HD32104P; OMRON: HD32105P; OMRON: HD32106P,
Other components: TOSHIBA: TM4312,
Original Equipment Manufacturer : OMRON: 800 (version-1); OMRON: 800 (version-2), Resemblance with: COMMODORE: C108; COMMODORE: C108D; CITIZEN: Eight P; TRIUMPH-ADLER: 804 (version-1), Made by: OMRON (List of all Import-OEM-models for MIIDA ELECTRONICS),
Known Serial-numbers: 716247 | 723156 (List of all S/Ns from MIIDA ELECTRONICS)
Collector value: 7/10,
Internet: Link-1: THE OLD CALCULATOR MUSEUM, Link-2: SCHLEPPTOPS Rechnerwiki, Link-3: EARLY ELECTRONIC CALCULATOR TECHNOLOGY REFERENCE, Link-4: MALETIC Greg