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Object Record

Catalog Number 89.0001.412
Object Name Board, Digital Circuit
Title Digital Equipment Corp. System Module: 4 Bit Counter 4215 B
Description The board has an aluminum rim on three sides, and a blue plastic connector bar (male) with "Amphenol 900-309 A-Z" on the fourth (short) side. On the short metal rim is a "DEC System Building Blocks" label. Stamped into the metal rim is "4215." From the connector bar are soldered connections to resistors and other electronic components.
Date late 1950s-early 1960s
Accession number 89.0001.412
Caption Digital Equipment Corp. System Module: 4 Bit Counter 4215 B
Catalog date 2005-03-07
Catalog type History
Provenance These modules were sold by DEC (Digital Equipment Corp.) beginning in the mid-1950s. They were used in the design and construction of early digital equipment used in laboratories, including computers. This type of module was used in the design of DEC’s first computer, the PDP-1, introduced in 1960.
Other Name Digital Circuit Board; Computer Board
Number of images 1
Updated 2017-09-07
Condition Very Good
NIH Property # none
Old NIH Property # none
Serial # 0039610