This document summarizes the key components of a computer system. It describes hardware components like the motherboard, CPU, RAM and hard disk drive. It also discusses software types including system software, programming software, application software and utility software. Finally, it outlines common input devices like the keyboard and mouse and output devices such as the monitor, speakers and printer.

1. Fundamentals in Computer
Systems
By: - Christy Shehan

2. Hardware
• All the touchable parts of the computer are known as hardware. It includes physical
equipment's of the computer.
• Power supply: - It provides power to internal components.
• Motherboard: - It is a rectangular board, which connects the other parts of the
computer.
• Expansion card: - A printed circuit board, that add a functional ability to the
computer.
• Hard disk: - The main storage of the computer.
• CPU: - The main Component which executes all computer programs
• RAM: - A storage that stores currently running programs

3. Power supply
Motherboard
Hard Disk
Expansion card Processor
RAM
ROM
BIOS

4. Software
• A set of instructions given to the computer to perform specific tasks.
• There are 4 types of software:
• System: It is the operating system used (windows)
• Programming: software used to create, debug and execute programs. (Python)
• Application: Used to perform tasks on the computer.(MS-Office)
• Utility: Programs used for utility purposes. (Antivirus)

5. System software Programming software
Application and utility software

6. Peripheral components
• Input devices
• Keyboard: An input device used to input data.
• Mouse: A pointing device used to locate icon on the desktop
• Microphone: Used to input sound
• Webcam: used to input visual data
• Scanner: Used to get data from paper to computer

7. Peripheral devices cont.……..
• Output devices
• Monitor: It is the main display of the computer.
• Speakers: It is used to give out audio from the computer.
• Printer: It helps to get information on computer to paper.
• Projector: Provides information on a monitor to a large screen.

8. Thank you