The Computer series are images of equipment, components, and parts. The series is arranged into five subseries: Bizmac, Card punch/punch tape, Card readers, Equipment, Spectra-70. There are some overlap in the Equipment subseries. The materials date from 1944 to 1977. Related materials can be found in the Government projects series.

International Business Machines Corporation (IBM) became a giant in the field of electronic data processing by the mid-1950s. There are two photographs (one each) of the IBM 650 computer and IBM 305 computer.

Research notes, correspondence, press clippings, prototypes, manuals, publications, and patents document work on computer architecture and programming languages at RCA and Komputer Pastimes.

Photographs and cassette tapes document circuitry, computers and consoles for RCA computers and games created by Weisbecker's company, Komputer Pastimes.

The Robert A. Bartolini papers are related to RCA's and the Sarnoff Corporation's research and development of optical and laser recording and storage technology. The materials include technical reports, research papers, operating system proposals, published articles covering optical recording, and photographic materials. In addition in contains folders on meetings and symposiums, presentations by and correspondence with Dr. Bartolini.

Eight of Bartolini's lab notebooks (1957-1983) can be found in Record group 26.

Computer pioneers John W. Mauchly and J. Presper Eckert and their associates at the Moore School of Electrical Engineering built six of the world's first electronic digital computers between 1943 and 1951. This collection consists of undated black and white photographs and slides; twelve of the eighteen slides are duplicates of the photographs. Two of the images are engineering drawings (EDVAC's block diagram and control panel) and the rest are images of the EDVAC and MSAC computers.

The Sperry Corporation was an electronics company and the UNIVAC Division manufactured the first commercial digital computer. The Sperry UNIVAC division has its origins in the Eckert-Mauchly Computer Corporation (EMCC), founded in 1946 by J. Presper Eckert (1919-1995) and John W. Mauchly (1907-1980). In 1950, Eckert and Mauchly sold their firm to Remington Rand, Inc, a major manufacturer of business machines, who continued development of the UNIVAC system. The collection documents predecessor organizations to the Sperry Corporation, including the Remington Typewriter Company, the Rand Kardex Company, and the Sperry Gyroscope Company; the formation of the Eckert-Mauchly Computer Corporation; the development of the UNIVAC brand under Remington Rand, Inc.; Philadelphia and St. Paul branches of the UNIVAC division; the UNIVAC manufacturing plant in Bristol, Tennessee; and Sperry divisions outside of UNIVAC, including Sperry Gyroscope Flight and Defense Systems, and Remington Rand office equipment.

The Sperry Corporation was an electronics company and the UNIVAC Division manufactured the first commercial digital computer. The Sperry UNIVAC division has its origins in the Eckert-Mauchly Computer Corporation (EMCC), founded in 1946 by J. Presper Eckert (1919-1995) and John W. Mauchly (1907-1980), the developers of ENIAC, the first electronic digital computer. This collection consists of the administrative, financial, marketing, personnel, and legal records of Sperry UNIVAC and its predecessor companies. Also included are manuals, reports, and publications on hardware and software developed by Sperry UNIVAC; task force reports and studies for developing new products; printed materials from the Systems Programming Library Service; and biographical and historical data.

The Thomas M. Stiller papers are composed of user manuals for the RCA 601 computer, research notes, photographs, and a presentation.

Three of Stiller's lab notebooks (1962-1974) can be found in Record group 26.