Artifact Details

Title

SMS card

Catalog Number

102730070

Type

Physical object

Date

1959 ca.

Manufacturer

International Business Machines (IBM). United Kingdom Ltd.

Identifying Numbers

Other number 491171 Printed with solder on the circuit side of the board
Other number EC 109899 Engraved on the component side of the board (engineering change order?)
Other number YBG02KUL2 Engraved on the component side of the board
Part number 371286 Engraved on the component side of the board

Dimensions

overall: 3/8 in x 4 1/2 in x 2 5/8 in

Description

Nine identical cards share this catalog number. The card is a 'DBCU' card whose function is "Two-Way AND, Type A (out-of-phase load)." The card consists of resistors, capacitors, and four transistors. A program cap runs the depth of the card.

Category

Component/module

Credit

Gift of Paul Pierce

Lot Number

X7021.2014