Artifact Details Title Classrom inverter module Catalog Number 102741333 Type Physical object Description The object is a classroom teaching aid consisting of a box with transistors and resistors inside with provisions for using jumper cables to demonstrate wiring and function of a logical inverter. Date CA. 1964 Manufacturer Digital Equipment Corporation (DEC) Identifying Numbers Model number 3101C Other number 33137 Engraved into the front panel of the object. Dimensions overall: 1 1/2 in x 4 7/8 in x 12 in Category Component/module Credit Hewlett-Packard Company (HP) Lot Number X7042.2014