Artifact Details

Title

Eclipse transparencies

Catalog Number

102735439

Type

Physical object

Date

1974

Manufacturer

Data General Corporation (DGC)

Identifying Numbers

Other number 100 SN, PB, CU number, printed along the top of the transparency of Layer 1.
Other number 107 SN, PB, CU number, printed along the top of the transparency of Layer 2.
Other number 107 44703 Printed above the layer number on the transparencies of Layer 2, 3, and 4.
Other number 1070320709 Rev number, printed along the top of the transparencies of Layer 1 and 2.
Other number 2.7 NI, AU number, printed along the top of the transparencies of Layer 1 and Layer 2.
Other number 6858B Eco number, printed along the top of the transparencies of Layer 1 and Layer 2.
Other number DGC12V010700044703/09 Printed in the top left corner of the transparency for Layer 1.
Part number 447 Printed along the top of the transparencies of Layer 1 and Layer 2.

Dimensions

overall: 18 in x 17 in x 1/8 in

Description

The record contains 4 transparencies for Eclipse circuit board layers. They are photographic transparencies used to manufacture a printed circuit board.

One of the transparencies is labeled "Layer 1" in the bottom middle of the transparency. It is a positive image of Layer 1, with circuit board traces and a solid boarder printed in a sepia brown color. In the top right corner "Eclipse extended CPU 2" is printed.

One of the transparencies is labeled "Layer 2" in the bottom middle of the transparency. It is a positive image of Layer 2, with circuit board traces and a solid boarder printed in a sepia brown color.

One of the transparencies is labeled "Layer 3" in the bottom middle of the transparency. It is a negative image of Layer 3, with power plane holes and a striped diagonal boarder printed in a sepia brown color.

One of the transparencies is labeled "Layer 4" in the bottom middle of the transparency. It is a negative image of Layer 4, with power plane holes and a striped diagonal boarder printed in a sepia brown color.

Credit

Gift of Data General Corporation

Lot Number

X466.84