MICROPROCESSOR AND MICROCONTROLLER

Detailed explanation-1: -The instruction decode unit is a part of the instruction fetch and decode cycle that helps translate the instruction and fetches register operands using the register set identifier. Ans. The control memory is an integral part of the control unit of the CPU.

Detailed explanation-2: -Decode means to parse the instruction to determine its meaning. A typical instruction consists of an opcode and (usually) one or more arguments. These arguments may refer to specific registers or memory addresses or can be immediate values to be used directly during execution.

Detailed explanation-3: -The combinational circuit that change the binary information into 2N output lines is known as Decoders. The binary information is passed in the form of N input lines. The output lines define the 2N-bit code for the binary information. In simple words, the Decoder performs the reverse operation of the Encoder.

Detailed explanation-4: -The CPU fetches the instructions one at a time from the main memory into the registers. One register is the program counter (pc). The pc holds the memory address of the next instruction to be fetched from main memory. The CPU decodes the instruction.