Before revision: In computing, a programmable interrupt controller (PIC) is an integrated circuit that helps a microprocessor (or CPU) handle interrupt requests ( IRQ ) coming from multiple different sources (like external I/O devices) which may occur simultaneously.
After revision: In computing, a programmable interrupt controller (PIC) is an integrated circuit that helps a microprocessor (or CPU) handle interrupt requests ( IRQs ) coming from multiple different sources (like external I/O devices) which may occur simultaneously.