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.

Acorn Atom Technical Manual

  Introduction                               page   3
  Construction Procedure             page   4
            Parts List                         page   6
            Layout Diagrams             page   8
            T.V./Video Monitor        page   13
            Power Supply                 page   13
            Switching On                  page   14
            Tape Recorder               page   14
            Output Ports                   page   15
  Circuit Description                    page   16
  Block Diagram                         page   18
  Memory Map                          page   20
  Expanding the ATOM             page   21
            Lower Text Space Extension     page   21
            Video Graphics Extension          page   21
            Floating Point Extension            page   22
            Uersatile Interface Adapter       page   22
            Printer Interface                        page   23
            Bus Buffers                              page   23
            Eurocard Extension                 page   23
            Other Extensions                     page   23
              c  Copyright Acorn Computers Ltd  1980.

Reference Number :

Date Published : October 1980

Manufacturer : Acorn

Platform : Atom






This exhibit has a reference ID of CH3811. Please quote this reference ID in any communication with the Centre for Computing History.

Acorn Atom Technical Manual

Click on the Images 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