MONARCH 800C

Description

Brand: MONARCH
Model: 800C
Type: Calculator
Picture: MONARCH 800C
Batteries: AA x 4
Lifetime: Introduced: 1975
Terminated: unknown
Notes: Plain calculator with basic functionality.

It has an 8-digit fluorescent display. A blue plastic cover causes the display to be blue, quite like the blue brand markings.

The last operation is repeated when the "="-key is pressed. Maybe hence the "C" in "800C"?

The calculator as a peculiar bug. When negative numbers need all eight digits to display, the minus in front of the number is no longer shown.

Errors are indicated by blinking the display.

Peripherals

A 6V power adapter.