Artifact Details


Whirlwind 203 flip-flop storage register

Catalog Number



Physical object


The object is a large metal circuit carrier with a phenolic board mounted underneath. It has 10 vacuum tube sockets, 7 are populated. 12 BNC jacks and a two multiconductor connector are mounted on the top. The string "203 FLIP FLOP STORAGE REGISTER" is printed in white ink in the upper left corner as well as the lower right corner of the phenolic board. The string "J14 ONE TO B" is engraved on a label to the left of the top row of BNC connectors and the string "J15 ONE TO A" is similarly engraved on a label to the left of the bottom row of BNC connectors. Labels next to some of the BNC connectors and tube identifiers are printed in white on top panel. The phenolic board contains numerous studs between which components and interconnecting wiring is mounted. Two pairs of indicator lights are mounted by brackets attached to the bottom of the metal panel. The string "FLIP FLOP A 203 01' is printed in white lettering on the upper bracket, and the lamps are labeled "0" and "1." A similar string is printed on the lower bracket indicating it is flip-flop "B."



Identifying Numbers

Other number F3-8 Written in black ink on a white paper label attached to the back lower right corner of the metal panel.
Serial number 3 Written in white ink un nthe upper left corner.


overall: 8 1/4 in x 26 in x 15 1/2 in




Gift of the Digital Equipment Corporation

Lot Number