The Opcode or the operation code is the part of the instruction that specifies the operation to be performed by the instruction. The CPU decodes (understands) the instruction with the help of the opcode. Copy the link given below and paste it in new browser window to get more information on Operand and Opcode:- http://www.transtutors.com/homework-help/computer-science/computer-architecture/operand-and-opcode.aspx

1. Operand and Opcode

2. Machine Code
 CPU understands only the binary language
 the machine code is the binary format of an instruction to be executed
by the CPU
 Has two parts: operand and opcode

3. Mnemonic Code
 assembly language uses symbolic codes instead of binary or to
represent the opcodes known as mnemonic codes
 mnemonic code is the symbolic representation of the operation code
 converted into machine code by the assembler

4. Opcode
 also known as operation code
 part of the instruction that specifies the operation to be performed by
the instruction
 n bit opcode is used to represent 2n instructions

5. Operand
 part of the instruction that specifies the data or the memory location
of the data on which the operation will be performed
 Types:
 Immediate
 Register
 Memory address
 Implied

6. Opcode and Operands

7. Hey Friend,
This was just a summary on Operand and Opcode. For more detailed
information on this topic, please type the link given below or copy it from
the description of this PPT and open it in a new browser window.
www.transtutors.com/homework-help/computer-science/computer-architecture/operand-and-
opcode.aspx