Main Classification Of Controller

- Aug 07, 2018-

The controller is divided into combinational logic Controller and micro-program controller, both of which have advantages and disadvantages. The combination logic controller design trouble, the structure is complex, once the design completes, cannot revise or expands, but its speed is fast. Micro-Program Controller design convenient, simple structure, modify or expand all convenient, modify the function of a machine instruction, only need to repeat the corresponding micro-program; To add a machine instruction, just add a micro-program to the control memory, but it is by executing a micro-path. The specific comparison is as follows: The combinational logic controller is also called the hard wiring controller, which is composed of the logic circuit, which realizes the function of the instruction completely by the hardware.