---
title: Litton - Monroe OC-8880
categories:
- Computers
types:
- Professional Computer
origins:
- Japan
years:
- '1981'
cpus:
- Z80
params:
  name: OC-8880
  image: /media/museum/photos/monroe_oc8880_1.jpg
  company: /companies/litton-monroe
  company_name: Litton - Monroe
  specs:
  - label: NAME
    value: OC-8880
  - label: MANUFACTURER
    value: Litton - Monroe
  - label: TYPE
    value: Professional Computer
  - label: ORIGIN
    value: Japan
  - label: YEAR
    value: '1981'
  - label: BUILT IN LANGUAGE
    value: Unknown
  - label: KEYBOARD
    value: Full stroke keyboard with function keys and numeric keypad. 93 keys.
  - label: CPU
    value: Z80
  - label: SPEED
    value: Unknown
  - label: CO-PROCESSOR
    value: Unknown
  - label: RAM
    value: 16 KB (128 KB max)
  - label: ROM
    value: Unknown
  - label: TEXT MODES
    value: Unknown
  - label: GRAPHIC MODES
    value: Unknown
  - label: COLORS
    value: Unknown
  - label: SOUND
    value: Unknown
  - label: SIZE / WEIGHT
    value: Unknown
  - label: I/O PORTS
    value: External disk drive, expansion bus, composite video output (monochrome), AUX serial I/O, COMM I/O, parallel printer interface
  - label: BUILT IN MEDIA
    value: One 5.25'' disk drive (300 KB)
  - label: OS
    value: CP/M
  - label: POWER SUPPLY
    value: PSU built-in
  - label: PERIPHERALS
    value: Unknown
  - label: PRICE
    value: Unknown
  tabs:
  - photos
  - links
  forum_thread: 560
  photos:
  - title: OC 8880
    subtitle: ''
    text: Thanks to [Jan Soderberg](http://w1.184.telia.com/~u18407217/) for this picture.
    image: /media/museum/photos/monroe_oc8880_2.jpg
  - title: SIDE
    subtitle: ''
    text: |-
      Notice the on/off switch on the side of the case.

      Thanks to [Jan Soderberg](http://w1.184.telia.com/~u18407217/) for this picture.
    image: /media/museum/photos/monroe_oc8880_side.jpg
  - title: REAR
    subtitle: ''
    text: Thanks to [Jan Soderberg](http://w1.184.telia.com/~u18407217/) for this picture.
    image: /media/museum/photos/monroe_oc8880_rear.jpg
  links:
  - title: Jan Söderberg Monroe's page
    url: http://w1.184.telia.com/~u18407217/monroe/monroe.html
    text: Some pictures and a nice description
  - title: Litton-Monroe history
    url: http://www.datamath.org/Featured_Companies.htm
    text: You will find here a small Litton-Monroe's history
  oc_id: 569
  source:
    url: https://web.archive.org/web/20221128054726/http://www.old-computers.com/museum/computer.asp?c=569
    date: '2022-11-28'
---

Info needed about this obscure CP/M computer!

Monroe - a subsidary of Litton Inc. - used to produce and sell calculators for years from 1912.

Very little is known about this CP/M system. To use the floppies you had to type in OPEN FPY0:

---

Thanks to Jan Söderberg for the pictures.