Artifact Details Title Binary To Octal Decoder System Building Block Catalog Number 102678807 Type Physical object Description A red tag attached reads "DEFECTIVE MODULE, USER (blank), TYPE (blank), Type 4151,DATE (blank), REMOVED BY (blank), DESCRIBE FAULT pls check. Questionable". Date ca. 1962 Manufacturer Digital Equipment Corporation (DEC) Identifying Numbers Model number 1151 4151 4153 J Other number R Stamped on top metal edge. Part number 4151 Serial number 0180411 Dimensions overall: 1/2 in x 7 in x 4 1/2 in Category Component/module