Processor 1 PROCESSOR The CPU consists of Control

Processor 1

PROCESSOR • The CPU consists of Control Unit(CU) and ALU. • CU stores the instruction set, which specifies the operations to be performed by the computer. • CU transfers the data and the instructions to the ALU for an arithmetic operation. • ALU performs arithmetical or logical operations on the data received. • The CPU registers store the data to be processed by the CPU and the processed data also. 2

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Motherboard • Buses: Electrical pathways that transfer data and instructions among different parts of computer • System clock It is a clock used for synchronizing the activities performed by the computer. 6

• ROM: Chip that contains the permanent memory of the computer that stores information, which cannot be modified by the end user. 7

• RAM: – It refers to primary memory of computer that stores information and programs, until the computer is used. – RAM is available as a chip that can be connected to the RAM slots in the motherboard. 8

• Video card : – Video card is an interface between the monitor and the CPU. – It is used for speeding up the processing and display of a graphics. 9

• Sound card : – Sound card is a circuit board placed on the motherboard and is used to enhance the sound capabilities of a computer. 10

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