IBM Corporation – IBM FRU 74F945 Industrial/Terminal Mainboard – 74F945 – Vintage Computer Circuit Board / Field Replaceable Unit-Used

Vintage IBM FRU 74F945 Circuit Board 1980s Retro Computer Mainboard Vintage IBM system board, Field Replaceable Unit (FRU)

catalog number 74F945,

likely from IBM industrial control or terminal equipment from early-to-mid 1980s era.

This is a historic computing component featuring: (1) Original discrete component construction with multiple IC chips including Sony CXK59286-series RAM chips dated 1993; (2) TTL-series logic components (74F series indicating fast TTL logic family); (3) Hybrid memory configuration combining EPROMs, ROMs, and SRAM; (4) Green PCB (printed circuit board) substrate with original solder joints and component markings; (5) D-sub 9-pin connector interface for system communication; (6) Original terminal connector blocks and gold-plated edge fingers for card slot insertion; (7) 16/4 status indicator and FCC Class A certification label; (8) Manufactured in USA.

This is a Field Replaceable Unit component from IBM’s extensive modular equipment line. Used condition, sold as-is for parts or restoration. Ideal for: vintage computer collectors, IBM industrial equipment restoration, retro computing enthusiasts, electronics hobby/education, museum collections. No testing performed.

Historical reference: IBM FRU components were designed for field serviceability and are highly collectible. Some comparable systems: IBM 5150, 5160, industrial terminals, or embedded control systems. Condition: as pictured, discoloration, dust, age-appropriate patina visible.

Collectibles > Vintage Electronics > Vintage Computers & Parts

Vintage IBM Field Replaceable Unit (FRU) circuit board model 74F945, representing an early-to-mid 1980s era industrial-grade system board, likely from IBM terminals, industrial control equipment, or embedded systems. The board exhibits original discrete component construction characteristic of late 1970s/early 1980s IBM hardware.