CHM Revolution

Date Introduced

1956

Photographer

Richards, Mark

Dimensions

overall: 54 in x 40 in x 30 in

Manufacturer

IBM Corporation

Copyright Owner

© Mark Richards

Location

US

Keywords

hard disk; Accounting; Business

Object ID

L2009.1.1

Speed

0.6 s

Memory Type

Magnetic Disk

Memory Size

4.4 MB

Memory Width

6-bit + parity

Cost

$3,200/mo or $45,000

This is the heart of the world’s first disk drive. It has 50 24” disks spinning at 1,200 RPM holding 5 million characters of information.