A computer is an electronic device used for work, learning, and play, with types including desktops, laptops, tablets, and smartphones. Key components include the monitor, keyboard, mouse, CPU, and speakers, and users can power it on and off through the CPU and start menu, respectively. Computers have various applications in education, healthcare, finance, and retail, with essential safety practices and basic keyboard and mouse skills outlined for effective use.

1. What is a Computer?
• A computer is an electronic device that helps
people work, learn, and play.
• Types of computers: Desktop, Laptop, Tablet,
Smartphone.

2. Parts of a Computer
• Main parts of a computer:
• - Monitor (displays information)
• - Keyboard (for typing)
• - Mouse (for selecting items)
• - CPU (brain of the computer)
• - Speakers (for sound)

3. Turning On and Off a Computer
• Turning On:
• 1. Press the power button on the CPU and
monitor.
• 2. Wait for the computer to start.
• Turning Off:
• 1. Click the Start menu.
• 2. Select 'Shut Down'.

4. Uses of Computers
• Computers are used in:
• - Schools (for learning)
• - Hospitals (for patient records)
• - Banks (for transactions)
• - Shops (for sales tracking)

5. Safe Use of Computers
• Safety Rules:
• - Sit properly while using a computer.
• - Keep the screen at eye level.
• - Take breaks every 20 minutes.
• - Do not eat or drink near the computer.

6. Basic Keyboard & Mouse Skills
• Keyboard Keys:
• - Letters (A-Z)
• - Numbers (0-9)
• - Spacebar, Enter, Backspace
• Mouse Actions:
• - Clicking, Dragging, Double-clicking.