Title
Read Write Hold and Deselect 4520 D system building blockCatalog Number
102716756Type
Physical objectDescription
On one side of the board is half covered in various components. The board is surrounded by an aluminum frame blue plastic 22 pin male connector. "READ WRITE HOLD AND DESELECT 4520 D" is printed on the solder side at there insertion end above the grid lettered A-Z.Date
1965 ca.Manufacturer
Digital Equipment Corporation (DEC)Place Manufactured
Maynard, Mass.Identifying Numbers
| Model number | 4520 D | Printed on the solder side at the insertion end |
| Part number | 4520 | Stamped into the face of the aluminum frame |
| Serial number | 0067599 | Stamped into the side of the aluminum frame |
Dimensions
overall: 1/2 in x 4 1/2 in x 7 inCategory
Component/module
