Artifact Details

Description

One (1) M420C module with pale green board and two magenta plastic extraction handles, each attached by two rivets. The handles read "digital" in raised letters on the solder-side. The board on the solder-side reads "PHASE LOCK CLOCK M420 PI" along the right edge. "FLIP CHIP" is printed between the rivets of the right handle and "FEB 2 1976" is printed in black below the left handle, component-side. There are three black inspection stamps on the component-side; one circle, one square, and one triangle. A repeating pattern of "don" is printed on the board in red.

Date

1968 ca.

Manufacturer

Digital Equipment Corporation (DEC)

Identifying Numbers

Model number	M420	Printed in white on the face on one handle
Other number	621E	Incised in the solder side of both handles
Other number	M420C PI	Printed on solder side of board

Dimensions

overall: 1/2 in x 5 1/4 in x 5 1/2 in

Category

Component/module