Artifact Details

Title

Whirlwind 404 in-out delay counter flip-flop

Catalog Number

102733434

Type

Physical object

Description

The module has nine vacuum tube connectors, five of which are populated. There are 17 coaxial connectos along the boarder of the module. There is a connector at one end. At the bottom there is a pair of red and white indicator lights, and a densly populated phenolic board with one delay line in the center. There is also a "Temporarily Modified" sticker on the phenolic board at the bottom.

Date

1951

Identifying Numbers

Model number	404	Stamped into the black plastic label on the front
Other number	01868	Stamped on a white sticker on the front
Other number	02132	Stamped on a white sticker on the front.
Other number	F9-6	Handwritten on a white sticker at the bottom.
Serial number	24	Stamped into the black plastic label on the front