Due to the implementation of a new Collection Management System, CHM staff will not be able to assist researchers and in-person visits until March 2025.
From magnetic tape and rare film to lab notebooks and business plans to early mainframes and source code, our collection is as diverse as the history of computing. It is a rich resource for everyone, comprising historical objects, documents, software titles, ephemera, and photographs and moving images.
Note: CHM's online catalog has been updated through January 23rd, 2025. A new and improved catalog will be launched in Summer 2025.
Search the Catalog
Catalog contains over 151,130 records.
"Model K" Adder (replica)
Still image, 2010
102798612
Pascal Adder (Pascaline) - replica
Still image, 2010
102798214
Schickard Calculator - replica
Still image, 2010
102798219
Brown Box replica
Still image, 2010
102798098
Zuse 1 binary gate (replica)
Still image, 2010
102798607
Oversized replica of Napier's Bones Exhibit
SITES
Still Image, Circa 1980
102622413
Babbage Difference Engine No. 1 Demonstration Piece - three-quarter-scale replica
Still image, 2010
102798212
Ed Clark receives a replica of a transistor from Bob Major at the formal dedication of Fairchild, Australia Pty. Ltd.
Still image, 1966-05-10
102695815
Stibitz Model K Adder
Bell Laboratories
Still Image, Circa 1939
102627225
Pascal Adder - Pascaline
Still Image
102710252
Jaquard Loom and Scheutz difference engine
Still Image
102689078