Artifact Details

Title

RAMAC model 350 head

Catalog Number

102715952

Type

Physical object

Date

1956

Manufacturer

IBM Corporation

Place Manufactured

U.S.

Dimensions

overall: 1/8 in x 3 in x 1 in; overall: 1/2 in x 1 1/2 in x 1/2 in

Description

RAMAC model 350 1956-1960. 50 disks, 24 inch diameter, 2 heads, 5 MByte, 600 ms access, 1200 rpm, 8.8 KByte/sec, 100 bits/inch, 20 tracks/inch, 800 u-inch fly height, 1200 u-inch media thickness, 1000 u-inch gap, EP bearing, laminated head. Ferrite drum head.

Category

Memory/disk

Credit

Gift of G. Fred Grometer

Lot Number

X5500.2010