Artifact Details

Title

Chip set

Catalog Number

102731372

Type

Physical object

Manufacturer

National Semiconductor Corporation (NSC)

Identifying Numbers

Model number IDM2911ANC Printed on top of one chip
Model number INS8049-6HYTN Printed on top of chip
Model number MM5781DPH/N Printed on top of one chip
Model number MM5799DUA/N Printed on top of one chip

Dimensions

overall: 1 in x 3 1/4 in x 2 1/4 in

Description

Object consists of four chips which seem to be related: The 8049 is a self-contained 8-bit microprocessor (per datasheet found by internet search). The 2911 is a "microprogram sequencer" for stepping through a program in ROM. No datasheets were found for the 5799 and 5781 in a search, although they are still obtainable from Chinese sources as of 2014. The set of four were found in deteriorating conductive foam, removed.

Category

Component/Semiconductor/microprocessor