INTRODUCTION TO COMPUTERS

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Presentation transcript:

INTRODUCTION TO COMPUTERS

What is computer Electronic device used to store, retrieve, and manipulate the data

Benefits of using computers Speed Accuracy Consistency Storage capacity and Flexibility

The Basic Components ALU CPU CONTROL UNIT INPUT UNIT OUTPUT UNIT MEMORY SYSTEM UNIT

Input devices: Keyboard Mouse Scanner Joystick

Output devices: Monitor Printer Plotter

Inside the CPU PROCESSOR EXPANSION SLOTS MEMORY

Inside the CPU Microprocessor Memory Bus Expansion slots

Microprocessor Performs numerical computations Logical comparisons Transfers data, addresses and control signals using buses

To store the Data Instruction Intermediate and final results Memory To store the Data Instruction Intermediate and final results

BUS used to transfer the data’s interface between devices

Built-in programs The programs written in the ROM at the time of mother board manufacturing

Expansion Slot To upgrade the PC

Basic technical terms Hardware: Software: Firmware: Electrical Mechanical and Electronic parts Software: Instruction - what is to be done and how the work is to be done. program - Set of instruction Software - Set of interconnected program Firmware: Embedded software (hardware +software) A software written for an electronic device