Question

C. One word Answer.
a. Which is the general format of instruction ?​

Answer 1

Answer:

GEEKSFORGEEKS

Computer Organization | Instruction Formats (Zero, One, Two and Three Address Instruction)

A computer performs a task based on the instruction provided. Instruction in computers comprises groups called fields. These fields contain different information as for computers everything is in 0 and 1 so each field has different significance based on which a CPU decides what to perform. The most common fields are:

Operation field specifies the operation to be performed like addition.

Address field which contains the location of the operand, i.e., register or memory location.

Mode field which specifies how operand is to be founded.

Instruction is of variable length depending upon the number of addresses it contains. Generally, CPU organization is of three types based on the number of address fields:

Single Accumulator organization

General register organization

Stack organization

In the first organization, the operation is done involving a special register called the accumulator. In second on multiple registers are used for the computation purpose. In the third organization the work on stack basis operation due to which it does not contain any address field. Only a single organization doesn’t need to be applied, a blend of various organizations is mostly what we see generally.