Friday, May 03, 2013

HARDWIRED CONTROL VS MICRO PROGRAM CONTROL



Some point of differences between hardwired control  and Micro program control are as tabulated below:
SN
Hardwired control
Micro programmed control
1
It is the mechanism to generate control  signals by using appropriate finite state machine(FSM)
Micro programmed control control is a control mechanism to generate control signals by using a memory called control storage (cs), which contains the control signals.
2
This is based on conditional circuit’s .
These are implemented as micro programs of routines.
3
In this type of control, the input and transforms are sent into control signals.
The control unit implemented in micro program is implemented in the form of a CPU inside another CPU.
4
These controls are faster and are known to have a more complex structure.
These types of circuits are simple but comparatively slower.

MICROPROCESSOR VS MICRO PROGRAM


Some points of differences  between  microprocessor and  micro program are as follows:
SN
Microprocessor
Micro program
1
Microprocessor is an integrated circuit on a chip.
Micro program is the software component of a processor.
2
Microprocessor is most often used to design computer such as laptops and desktops.
These are the commands which let the system to carry basic instructions.
3
Microprocessor consists of number of micro programs.
Micro programs are the components of all computer micro processors.
4
It interfaces with the clock, memory and input and output.
This stored-program logic substitutes for hardwired control circuitry.