BUY UM82C11 https://www.utsource.net/itm/p/1398449.html
Printer Adapter Interface (PAI)
The UM82C11 is a CMOS peripheral interface adapter (PIA) manufactured by UMC. It is a 40-pin dual-in-line package (DIP) integrated circuit (IC). Description: The UM82C11 is a general-purpose PIA designed to provide a simple interface between a microprocessor and peripheral devices. It features two 8-bit bidirectional ports, each with four control lines. It also has an interrupt output and a handshake input. The UM82C11 is designed to be used in a wide range of applications, including data acquisition, control systems, and communications. Features: Two 8-bit bidirectional ports Four control lines per port Interrupt output Handshake input Low power consumption High noise immunity CMOS technology Applications: Data acquisition Control systems Communications Automation Robotics Instrumentation (For reference only)