The National IMP-16 is a family of multi-chip 16-bit bit-slice microprocessor developed by National semiconductor and introduced in 1973. The chips were made using PMOS technology. Like the IMP-8, the IMP-16 was designed using 4 IMP-4 4-bit bit-slice logic units and a single control unit. The IMP-16 was later superseded by the PACE and later by the INS8900.

Family Members
Part	Description
IMP-16A/521D	Control and Read-only Memory (CROM) 16-bit standard instruction set
IMP-16A/522D	Control and Read-only Memory (CROM) 16-bit extended instruction set

Design

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