Question

Define: (i) Instruction set (ii) Word Size (iii) MicroProccesor Composition

Answer 1

1.


Instruction set is the language the processor understands. Whatever the programming language you used to code, ultimately it has to be converted into corresponding processor instruction set on which it is supposed to execute. These conversions are handled by compilers and assemblers.

There are several instruction sets devised by various processor manufacturers. 
Examples includes x86,x86_64,ARM,etc.

One instruction set can be implemented by multiple processors in various ways.(I mean the code written in particular instruction set can run on all the processors which implements the same instruction set)




2.

the number of bits processed by a computer's CPU in one go (these days, typically 32 bits or 64 bits). Data bus size, instruction size, address size are usually multiples of the word size.

Just to confuse matters, for backwards compatibility, Microsoft Windows API defines a WORD as being 16 bits, a DWORD as 32 bits and a QWORD as 64 bits, regardless of the processor.



3.


It is a device or rather say a integrated chip which process some instructions given to it in microseconds.
So it got the name microprocessor.
To transfer the data inside the chip from one place to another it has bus system just like our buses to move the people to different places in a city.
Here inside the bus some people are data or some address and the bus is thus bifurcated in two names address bus and data bus.
8085 is 8 bit processor which means it can do some operations like addition subtraction of maximum 8 bit( can do same operation of 16 bit also like DAD using two 8 bit dedicated registers) at a time and 8085 has 16 bit address bus.

Answer 2

➡instruction set

the complete set of all the instructions in machine code that can be recognized and executed by a central processing unit.

➡Word size

32 bits

"Word size" refers to the number of bits processed by a computer's CPU in one go (these days, typically 32 bits or 64 bits). Data bus size, instruction size, address size are usually multiples of the word size.


➡MicroProccesor Composition

The basic functionality of the Microprocessor is to do processing. Microprocessor performs two type of operations called Arithmetic and Logic. So the basic functionality unit which consists of Arithmetic ( Addition, Subtraction, Multiplication & Division) and Logic (AND, OR, NOT) is called Arithmetic Logic Unit.