THE CENTRAL PROCESSING UNIT

1. DEFINE CPU

1.1. The hardware component of the computer that does most of the work in executing a program

1.2. THREE (3) major parts which is: ~ register set ~ arithmetic-logic unit (ALU) ~ control unit

2. CPU DIAGRAM

2.1. control unit

2.1.1. register unit

2.1.2. arithmetic-logic unit (ALU)

3. INSTRUCTION CYCLE

3.1. FETCH

3.1.1. Get instruction from RAM

3.2. DECODE

3.2.1. Determine the operation to be performed,the addressing mode of the instructions and the location of the operands

3.3. EXECUTE

3.3.1. Execute the instruction and return to step 1 to fetch the next instruction in sequence