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.

  • 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
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