Docstoc

CENTRAL PROCESSING UNIT

Document Sample
CENTRAL PROCESSING UNIT Powered By Docstoc
					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,shifti
  ng,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.
Model of Control Unit
                      Registers

• A register is a group of flip-flops with each
  flip-flop capable of storing one bit of
  information.

         15 14    12 11                 0
    IR
         I   OpCode       Address
              Resources

• Computer System Architecture
  M.Morris Mano

• Computer Organization and Architecture
  William Stallings

				
DOCUMENT INFO
Shared By:
Categories:
Tags:
Stats:
views:33
posted:9/14/2010
language:English
pages:9