An instruction is a binary pattern designed inside a microprocessor to perform a specific function.
The entire group of instructions that a microprocessor supports is called Instruction Set.
8085 has 246 instructions.
Each instruction is represented by an 8-bit binary value.
These 8-bits of binary value is called Op-Code orInstruction Byte.
Classification of Instruction Set
Data Transfer Instruction
Arithmetic Instructions
Logical Instructions
Branching Instructions
Control Instructions