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Monroe 1800-Series Advanced Programming Reference Manual

Sincere thanks to John Engels for donation of this document to the museum

Front cover of Monroe 1800-Series Advanced Programming Reference Manual
Circa 1973

This document outlines special "machine-level" advanced programming methods for the Monroe 1800-Series electronic calculators. These calculators utilized an advanced, computer-like microcoded chipset that, along with normal "learn-mode" programming function, allowed access to some of the lower-level microcode routines by the programmer. This could allow advanced operations such as binary logic operations, direct access to memory and storage registers, and advanced control of peripheral devices.

See the exhibit on the Monroe 1860 for an example of one of the Monroe 1800-Series calculators.

Monroe's 1800-series calculators are OEM versions of calculators made by Computer Design Corporation (Compucorp).