INTRODUCTION TO COMPUTERS PDF VERSION.pdf

Technology is Evolving each and everyday. so it is now a mendatory for us as people , especially students to learn atleast basics of it. Now this Topic is gonna introduce you to the computer

1. INTRODUCTION TO
COMPUTERS
GRADE 10 COMPUTER APPLICATION
TECHNOLOGY

2. A computer is an electronic device that processes data and
performs tasks according to a set of instructions called a
program.
-It can perform many tasks such as calculations, data
processing, and searching the internet.
-Computers are essential tools of modern society and are used in
various fields such as education, business, medicine and
entertainment.

3. Components of a computer
1.Central Processing Unit (CPU):
The brain of the computer that performs instructions.
Function
●Executes the instruction and delivers the results to the associated output.
2. Random-Access Memory(RAM)
●Temporary storage that allows the CPU to access data quickly.
●It is a volatile memory
Function
●Acts as a temporary storage
●Makes possible to read files faster
●Improves application performance.
●Storage read speed is GBs/second

4. 3. Read-Only Memory(ROM)
●Type of computer memory that can only be read from, not written to.
●It is a non-volatile memory.
●Stores data permanently.
Functions
●Stores data permanently.
●Stores important information such a BIOS settings and operating systems.
instructions that your computer needs in order to operate correctly.
●Storage read speed rate is MBs/second.
4.Motherboard
●The main circuit board that connects all components.
Function

5. cont….
●It connects all of the internal components of a computer.
●It also provides power to each component and allows them to communicate with
each other
5. Power Supply Unit (PSU)
●A hardware component of a computer that supplies other components with power.
Function

6. cont….
●Supplies power to the computer
●Converts mains AC to low-voltage regulated DC power for the internal components
of a desktop computer
6. Input Devices
A.Keyboard
●Is an input device used to enter the information inside the computer using keys or
characters to type information inside the computer

7. cont….
Function
●Enter information inside the computer
●Control keys
●Function keys
●Navigation keys
●Numeric keypad
B. Mouse
●A small device that a computer user pushes across the desk in order to point to a
place on a display screen and to select one or more actions.
Functions
●To select items in a computer
●To give instructions to a computer to perform tasks.

8. Cont….
Below are some of the input devices

9. Cont….
7. Output devices
●Hardware components that gives out the results of the entered information once
processed(data).
A.Monitor
●An output device that displays information in pictorial or textual form.
Functions
●Display data
B. Printer
●An output device that prints out documents and images onto a paper.
Function
●Prints out information on a paper

10. cont….
Output devices

11. Types of computers
1.Desktop Computers: Traditional personal computers used at a desk.
2.Laptops:Portable computers that combine all components into one unit.
3.Tablets:Touchscreen devices that are highly portable.
4.Servers:Powerful computers that provide services to other computers over a
network.
5.Supercomputers:Extremely powerful computers used for complex computations in
research and industry.
6.Embedded Systems:Specialized computers integrated into other devices (e.g.,
smartphones, appliances).

12. THE END