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CENTRAL PROCESSING UNIT. Written by: Gizem Gulsen. INTRODUCTION. The central processing unit is where all the calculations and logic operations take place. CPU performs data-processing operations. Main Parts of CPU. Arithmetic Logic Unit (ALU) Control Unit (CU) Registers.
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CENTRAL PROCESSING UNIT Written by: Gizem Gulsen
INTRODUCTION • The central processing unit is where all the calculations and logic operations take place. • CPU performs data-processing operations.
Main Parts of CPU • Arithmetic Logic Unit (ALU) • Control Unit (CU) • Registers
Arithmetic Logic Unit • ALU performs the required microoperations(addition,subtraction,shifting,increment,decrement etc.) for executing the instructions. • Alu performs an operations and the result of the operation is transferred to a destination register.
Control Unit • The control unit(CU) supervises the transfer of information among the registers and instructs the ALU as to which operation to perform.
15 14 12 11 0 IR I OpCode Address Registers • A register is a group of flip-flops with each flip-flop capable of storing one bit of information.
Resources • Computer System Architecture M.Morris Mano • Computer Organization and ArchitectureWilliam Stallings