MCM System 900 (MCM/900)

Dublin Core

Title

MCM System 900 (MCM/900)

Subject

hardware: desktop computer

Description

The MCM System 900 (MCM/900) desktop computer, designed by André Arpin, was released in 1978. The computer consisted of the main CPU unit with built-in display and keyboard. As was the case with its predecessors (the MCM/70, /700, amd /800), it was an APL computer (with the MCM/APL interpreter in ROM).

Hardware:
  • CPU: based on AMD 2901 bit-slice processor
  • RAM: 24 Kbytes
  • virtual memory: 256 Kbytes
  • external storage: up to 1 Mbyte using MCM DDS-1000 diskette systems
  • display: 12 inch (21 lines  x 96 characters)
  • keyboard: 48 character APL keyboard
  • communications interface: RS 232C, Omniport

Software:
  • OS: AVS/EASY (A Virtual System/External Allocation SYstem)
  • programming language: MCM/APL  (in ROM)
  • applications: Text 900 word processor, Plotting, File Management, Financial Modelling, Client Accounting, PVAS (Pension Valuation), as well as statistical, engineering, finance, and business APL libraries.

Creator

Micro Computer Machines

Date

1978

Relation

MCM Collection

Files

mcm900c.jpg
mcm900b.jpg

Citation

Micro Computer Machines , “MCM System 900 (MCM/900),” York University Computer Museum Canada, accessed December 6, 2021, https://museum.eecs.yorku.ca/items/show/320.

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