AND: Logical AND: This instruction bit by bit ANDs the source operand that might be an immediate, or a memory location or register to the destination operand that might be a memory location or register. The result is in the destination operand. At least 1 operand should be a register or a memory operand. Both of the operands can't be memory locations or immediate operands. An immediate operand can't be a destination operand. The instance of this instruction is as follows:

Example :

If the content of register AX is 3FOFH, the first instance instruction will carry out the operation as given below. The result 3F9FH will be in the AX register.

The result 0008H will be in  register AX.