What are the Microoperations and Types of Microoperations

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We all know computer system is very useful thing in today’s era and if I tell about architecture of this great invention it has various components and it has very complex hardware implemented perfectly.  So today this post is all about Microoperations
used by hardware of computer system and it is also considered in architecture of computer system.


About Microoperations

In system design using modular approach having components and join these components to make a system, components could be registers, multiplexers, decoders, adders etc.

Microoperations are the basic operations that can be performed by system on data stored in registers. Each microoperation describes a simple operation performed on data in one or more registers.

Microoperations are used by processors to complete their tasks to transfer data from one place to another. If we take this more specific then microoperation could be for transfer data from register to register, between registers and external bus, or accomplish a simple ALU operation.


Types of Microoperations
  1.   ARITHMETIC MICROOPERATIONS
  2. LOGIC MICROOPERATIONS
  3.  SHIFT MICROOPERATIONS



Arithmetic Microoperations

We know basic arithmetic operations are Addition, Subtraction, Increment, Decrement, and Shift.

Addition Microoperation

addition microoperation
  

(In this operation, data presented in R1 register is added with data in R2 register and result will be stored in R3 register)

Subtraction Microoperation

subtraction microoperation


(Data presented in R2 register is subtracted from data in R1 register and result will be stored in R3 register)

One’s Complement Microoperations

one's complement microoperation


(Data value in R2 register is first complemented then will be replaced with itself)


Like these arithmetic microoperations there are many more microoperations for arithmetic. But concept is same perform arithmetic operation on data values in registers and store them into the same register or another.


Logic Microoperations

In Logic Microoperation there could be different operations like OR, AND, NOT, XOR etc. but these are basic microperation in logic type.

OR Microoperation: -

Symbol used for OR Microoperation is “v” or “+”. “v” this symbol is used when we are showing OR microoperation on bits and “+” this symbol is used for showing OR microoperation when we are using Registers (R1, R2 etc) for implementing OR Microoperation.

Example: - 100110 v 1010110 = 1110110      

Explanation of example, in this example each bit starting from right side will be compared with OR operation and we will get result after all comparisons and in last if bits are left we can place them as it is.

AND Microoperation: -

This is very similar to OR microoperation but, it have different symbol and different operation that is AND Gate concept.

Symbol is “^”

Example: - 100110 ^ 1010110 = 0000110

Bits are compared from right side with AND gate operation.

In NOT Microoperation “bar” symbol is used

Example: -

not microoperation


There are much more logic microoperations are there but  process of implementation is same just have their own different calculations.


Logic Microoperations Hardware Implementation

The hardware implementation of logic microoperations requires that logic gates be inserted for each bit or pair of bits in the registers to perform the required logic function

Most computers use only four (AND, OR, XOR, and NOT) from which all others can be derived.


Note: this is not complete package about microoperations so if anyone has query can ask in comments below.

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