OP-1064   29 June, 1945
and Addendum 1   14 September, 1951
Computer Mark I and IA Mods
Theory and Operation


These files require the free Adobe reader or browser add in to view.  If you cannot open these files, you can download and install the free reader.  Be sure to select the version for your operating system. (Windows Vista, XP, Mac, Linux, etc.)

Get free Adobe Reader if you can't open files

These files are searchable from within your reader.




Ordnance Pamphlet 1064 describes the theory and operation of the Computer Mark 1 and Mods.  A companion publication, Ordnance Pamphlet 1064A covers care and maintenance of this equipment.

Each file has a hot linked table of contents to allow for fast navigation.






First, take note of the file sizes on the right side of the Quick Reference Index.  Locate the subject you want, then click to load the file with that information.  Each file has a hyper-linked table of contents for easy navigation.   Addendum 1 is below the other files.


table of contents part 1 and 2Part 3appendix and glossary part 1 and 2

All files have a table of contents on the first page.  Load the file containing the desired page number, then enter the page number at the top of your reader to go directly to it.

Part 1 and 2      20.9 mb

Part 3                29.0 mb

Appendix            7.0 mb

Addendum 1       8.5 mb