The document summarizes the main components and block structure of a computer system. It outlines the input unit which reads data and programs into the computer. It describes the primary and secondary memory units for temporary and permanent storage. The arithmetic logic unit performs arithmetic and logical operations on data as instructed. The control unit manages the movement of data and instructions between memory and the central processing unit which executes stored programs. The output unit delivers results to the user and allows machine to human communication.

1. PRESENTATION ON BLOCK STRUCTURE OF COMPUTER

2. 1. Block diagram of a computer 2. Input unit 3. Memory unit a) Primary memory b) Secondary memory 4. ALU 5. CU 6. Central processing unit 7. Output unit CONTENTS

3. BLOCK DIAGRAM OF COMPUTER

4. It reads the data and program into the computer.The program contain instruction about what has to be done with the data.It provide a way of man to machine communication. INPUT UNIT

5. STORAGE UNIT THEIR ARE TWO TYPES OF MEMORY UNIT 1 PRIMARY MEMORY 2 SECONDARY MEMORY

6. It performs the arithmetic & logical operations on the data as a result of the execution of the decoded instruction. ARITHMETIC & LOGIC UNIT

7. It is responsible for the movement of data & instruction in and out of the memory and CPU. CONTROL UNIT

8. The purpose of CPU is to execute the programs stored in the main memory. CENTRAL PROCESSING UNIT

9. These devices are required to deliver results to the user of computer system.This unit provides a way of machine to man communication OUTPUT UNIT

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