Artifact Details

Title

PDP-1 Drum Unit

Catalog Number

X787.86

Type

Physical object

Date

ca. 1961

Manufacturer

Vermont Research Corp.

Place Manufactured

U.S.

Identifying Numbers

Model number 1161 Stamped on a metal tag affixed to the top of the drum unit
Serial number 2A110-291 Stamped on a metal tag affixed to the top of the drum unit

Dimensions

overall: 69 3/4 in x 21 3/4 in x 27 in

Description

This heavy duty steel rack has the drum unit mounted at the top. The card cage is below the drum. The bottom contains the power supply and fan. The card cage contains 20 transistor modules plugged in. A panel of toggle switches is in the middle of the front of the unit. The manufacturer's tag indicates the drum has 512 tracks and runs at 3420 RPM. Note: PDP-1 Model 34 Display Unit included (but no evidence of accessioning) on Accession Receipt. Model 34 Display Unit assigned X788.86 until clarification / reconciliation possible. D.S. 10/8/98.

Category

Memory: drum

Lot Number

X787.86