Fingers Crossed for 2021 ...

2020 was the worst! COVID kept the museum closed for much of the year and a mains water pipe bursting causing a flood kept us closed for the rest. 
We're hoping to re-open in the next few months ... fingers crossed! Read More >>>

Please Donate Via Just GivingNo visitors, no workshops, no events, no school visits... no income. We know that things are tough for everyone right now, but if you can afford to help us through these tough times please donate what you can.

There's over 36,000 exhibits here! That should keep you occupied for a bit - get searching!

Or come and get involved on our social media channels ...

      Twitch  Facebook          Online Gift Shop      

Thank you.

Altos Model 5-15ED

The 1981 Altos Model 5-15ED was an  8 bit microprocessor based system with dual floppy and Winchester hard disk together with single board microcomputer technology.

The Altos Series 5 computer system was a Z80A-based multiuser system designed to fit many commercial, technical, industrial, Scientific, and educational applications. It ran under either CP/M, MP/M II, or OASIS operating systems. In its basic figuration, the system was contained in a single chassis, however additional chassis could be connected to the basic chassis to increase system capabilities*

The basic computer system includes the CPU, four RS-232-C ports, one parallel port, 192 kilobytes of RAM, all peripheral Controllers, and one 5-1/4 inch floppy disk drive. You have to add a keyboard  terminal, provide your own floppy diskettes and cabling. 

Series  5-5D also included a five-megabyte drive and a five-inch hard disk drive.Series 5-15D also  included a  second one-megabyte disk drive unit.

Our Altos is a model 5-15ED with a serial number of 50-12302. This unit which is in excellent condition was very kindly donated by Trevor Scott together with
Altos Preliminary Series 5 Computer System User Manual
 Revision D February 26, 1982
Altos Computer Systems Tri-fold promotional leaflet 1981
Altos ACS8000 approved product list. 1st October 1981
copies of the ACS8600 16 bit system leaflet

Manufacturer: Altos
Date: 1980

Comment on This Page

Other Systems Related To Altos Model 5-15ED:

Item Manufacturer Date
Altos 986-40E Altos August 1985

This exhibit has a reference ID of CH7012. Please quote this reference ID in any communication with the Centre for Computing History.


Altos Model 5-15ED

Click on the Image(s) For Detail


Help support the museum by buying from the museum shop

View all items

Founding Sponsors
redgate Google ARM Real VNC Microsoft Research
Heritage Lottery Funded
Heritage Lottery Fund
Accredited Museum