control unit

What is control memory ?

• It stores all the microinstructions

• Its small and fast

• It controls the processors action ……

• without this processor doesn’t know what to do

What is address sequence ?

Its is a method which decide the next instructions that CPU will execute

Purpose : The CPU should work in sequencial manner

Without this the CPU will get confused which tasks to perform next

What is micro program ?

It is a set of micro instructions in the control memory

It tells how to perform specific tasks

Break down tasks into simple steps

What is symbolic microinstruction ?

The microinstruction is written in a way that human understand

Use symbols instead of binary numbers

It makes it easier for code to write and debug

It makes the complex word more accessible to human

What is fetch routine ?

• First instruction cycle in the CPU

• It grabs the next instruction to be executed

• It makes sure the CPU knowns what to do next

what is microprogram sequencer ?

It is a part of control unit which decide the order in which micro instructions are executed

It will make sure that instructions are followed

It make sure CPU execute processes in sequence without skipping any steps

What is microprocessor ?

It is a tiny computer brain

It follows the microinstruction to do tasks

It is used in computers and phone

What is micro program ?

It is a set of tiny micro instructions

It tells microprocessor what to do and how to do

It helps the microprocessor not to get confused as he has to follow instruction given by microprogram

Is it possible to design a microprocessor without a microporgram ?

Yes , the hardwired control unit doesn’t contain the microprograms it works through flip-flops and

Are all micro-programmed computers also microprocessors?

• No , A microprocessor is just one small part of a computer, like the brain of a phone or a laptop.

• A microprogrammed computer can be a whole big system, not just a single chip.

What is microoperation ?

An mircooperation is a very tiny tasks

Like adding two numbers and move data

Its important because its perform smaller tasks

What is microinstruction ?

A instruction which tells the cpu to perform the microoperation

like add it

What is microprogram

It is a list of microinstruction

Its like a recipe

Its important because like we know the steps and its in sequence

What is mircocode ?

Those are low level instructions

Those are full set of microinstructions stored inside the computer