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- Friden Electro-Mechanical Calculator, Model STW, 1949-1966 - Mechanical adding machines were indispensable office equipment used before the computer era. These devices were perfected by the American Arithmometer Company in 1886, spurred on by William Seward Burrough's desire to reduce drudgery in clerical arithmetic work. Transistors and electronic desktop calculators displaced adding machines in the 1950s; by the 1970s, microchips reduced calculators to the size of a shirt pocket.
- 1949-1966
- Collections - Artifact
Friden Electro-Mechanical Calculator, Model STW, 1949-1966
Mechanical adding machines were indispensable office equipment used before the computer era. These devices were perfected by the American Arithmometer Company in 1886, spurred on by William Seward Burrough's desire to reduce drudgery in clerical arithmetic work. Transistors and electronic desktop calculators displaced adding machines in the 1950s; by the 1970s, microchips reduced calculators to the size of a shirt pocket.
- IMSAI 8080 Microcomputer, Used with Home Built Interface and IBM Selectric Typewriter, Assembled in 1977 - The IMSAI 8080 was a clone of the Altair 8800, the first mass marketed personal computer. It was a popular "kit computer," requiring assembly and programming. With no keyboard, toggle switches allowed input and LED lights signaled output. This could be modified using an IBM I/O typewriter. The donor, O.S. Narayanaswami, was a mechanical engineer interested in the educative power of computers.
- 1977
- Collections - Artifact
IMSAI 8080 Microcomputer, Used with Home Built Interface and IBM Selectric Typewriter, Assembled in 1977
The IMSAI 8080 was a clone of the Altair 8800, the first mass marketed personal computer. It was a popular "kit computer," requiring assembly and programming. With no keyboard, toggle switches allowed input and LED lights signaled output. This could be modified using an IBM I/O typewriter. The donor, O.S. Narayanaswami, was a mechanical engineer interested in the educative power of computers.
- Caterpillar Model 10 Tractor, 1929 -
- 1929
- Collections - Artifact
Caterpillar Model 10 Tractor, 1929
- IMSAI "Microcomputer System User Manual," 1976 -
- 1976
- Collections - Artifact
IMSAI "Microcomputer System User Manual," 1976
- Particle Gun, Used in Dr. Charles S. Gasser's Laboratory at the University of California-Davis, 1990 -
- 1990
- Collections - Artifact
Particle Gun, Used in Dr. Charles S. Gasser's Laboratory at the University of California-Davis, 1990