CHM Revolution

Date Introduced

1956

Photographer

Richards, Mark

Dimensions

overall: 1/8 in x 8 1/4 in x 8 1/4 in

Manufacturer

Sperry Rand Corporation. Univac Division

Copyright Owner

© Mark Richards

Location

US

Keywords

Electronic; mechanical; magnetic

Object ID

102716166

Memory Type

Magnetic Core

Early cores were 1/16” in diameter, could be accessed in 5 microseconds, and cost about $1 per bit. Eventually they were 4 times smaller, 10 times faster, and 100 times cheaper.