Lot of 3 Original National Semiconductor PACE Microprocessor Manuals (1976–1977)

This vintage engineering reference set covers design, assembly, and logic programming for the early PACE 16-bit microprocessor family — one of National Semiconductor’s pioneering integrated processor lines from the 1970s.

Includes all three titles:

1. PACE Microprocessor System Design Manual

Publication No. 420305292-001A / Order No. IPC-16A/928

March 1977 — Price marked $5.00

2. PACE Processing and Control Element – Assembly Language Programming Manual

Publication No. 4200130A / Order No. IPC-16S/969Y

January 1977

3. PACE Logic Designer’s Guide to Programmed Equivalents to TTL Functions

Publication No. 4200127X / Order No. IPC-16A/927 — Preliminary Edition

March 1976

Each manual features:

Official National Semiconductor logo and worldwide office listings

Elmar Electronics (Mountain View, CA) distributor sticker on covers

Three-hole punched format for binder use

Printed in U.S.A.

Condition:

All manuals are complete and clean with tight pages. Light shelf wear, mild edge toning, and minimal handling marks consistent with age. No writing, tears, or missing pages. Hole punches clean.

Measurements: approx. 11" × 8.5" each

Total weight: about 1 lb 8 oz before packaging

⚙️ Highlights:

Original 1976–77 National Semiconductor documentation

Excellent for collectors, restorers, or computing historians

Authentic technical reference from the early microprocessor era

Hard-to-find complete 3-manual lot