The controllable silicon circuit controlled by monolithic microcomputer is introduced, which adopts external interrupt to obtain sync signals and controls conducting angel with a timer.
This paper mainly introduces interface circuit design of 8259a and 32 bit single chip microcomputer, provides a method for extension of 80960kb interrupt system.
No hardware alteration is needed in this method. The time-interrupt achieved can be used in real-time microcomputer control systems and various sample frequencies can thus be conveniently obtained.