1. Introduction to Computers

Definition: An electronic device that processes and stores data.

Types:

• Desktops: Fixed location.
• Laptops: Portable.
• Tablets/Smartphones: Fixed location.

2. Basic Components

Hardware:

• Central Processing Unit (CPU): The brain of the computer.
• Memory (RAM): Temporary storage for active tasks.
• Storage: Hard drives (HDD) and Solid State Drives (SSD) for data storage.
• Input Devices: Keyboard, mouse.
• Output Devices: Monitor, printer.

Software:

• Operating System (OS): Manages hardware and software (e.g., Windows, macOS, Linux).
• Applications: Programs for specific tasks (e.g., Word, Excel, web browsers).

3. Internet and Web Browsing

Web Browser: Software used to access and navigate the internet (e.g., Chrome, Firefox).

Search Engines: Tools to find information online (e.g., Google, Bing).

4. Computer Maintenance and Safety

Regular Updates: Keep your operating system and applications up to date to ensure security and performance.

Antivirus: Use antivirus software to protect against malware and other security threats.

Backup Data: Regularly save important files to an external drive or cloud storage to prevent data loss.