Early
Electronic
Calculator		 Monroe 610 Calculator

Manufacturer: Monroe
Model: 610
Year: 1971
Form: Desktop
Functions: Basic four, constant, rounding
Number of Digits: 12
Display Type: NIX
Display:JRC B-5755
Logic Technology: LSI-4
Diodes: 53
Transistors: 36
IC Complement:Texas Instruments TMC1733 AJC
Texas Instruments TMC1753 AJC
Texas Instruments TMC1754 AJC
Texas Instruments TMC1755 AJC
Tech. Data Level: 2
Tech. Data Source: RE
Tech. Data Pages: 1
Tech. Data:Schematic (pdf)

A nice space-agey-design NIXIE desktop. One of the last calculators to use a NIXIE display, and similarly a little unusual in combining a NIXIE display with LSI chips.

Notes:
  • OEM is Canon.


Internal view.
The logic board.
Bottom view of the magenetic-reed switch keyboard.

- Unit Log -

Serial Number: 209040
Year of Manufacture: 1971 (Integrated circuits stamped with 7103, 7107, etc.)
Date of Receipt: 1990s
Source: Donation.
State upon Receipt: Good physical condition, functional.
Current State: Fully functional (12 Jun 2001).


  Monroe 610
Calculators | Integrated Circuits | Displays | Simulations
EEC 		bhilpert