1. INTRODUCTION TO COMPUTERS

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

3. Benefits of using computers
Speed
Accuracy
Consistency
Storage capacity and
Flexibility

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

5. Input devices:
Keyboard
Mouse
Scanner
Joystick

6. Output devices:
Monitor
Printer
Plotter

7. Inside the CPU
PROCESSOR
EXPANSION SLOTS
MEMORY

8. Inside the CPU
Microprocessor
Memory
Bus
Expansion slots

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

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

11. BUS
used to transfer the data’s
interface between devices

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

13. Expansion Slot
To upgrade the PC

14. 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