Mohit Sir

  Machine and Its Types What is a Machine? A machine is a tool that helps us do tasks faster, easier, and more accurately. Types of Machines 1.      Simple Machines : Machines with few parts, requiring manual effort. o    Examples : Scissors, pulley, lever. o    Uses : Cutting, lifting, or pulling objects. 2.      Automatic Machines : Machines that work on their own using electricity or fuel. o    Examples : Washing machine, microwave, fan. o    Uses : Cleaning clothes, cooking food, cooling rooms. 3.      Complex Machines : Machines made up of many parts working together. o    Examples : Computer, car, airplane. o    Uses : Calculations, transportation, communication. Introduction of Computer What is a Computer? A computer is an electronic machine that follows instructions to perform tasks. Features of a Computer Work...

  1.   What is a keyboard? Ø A keyboard is a device that helps us type letters, numbers, and symbols into a computer. 2.   List out the types of keys. Ø Alphabet keys Ø Number keys Ø Function keys Ø Punctuation keys Ø Special keys (like Shift, Ctrl, Alt) Ø Cursor control keys (like arrow keys) 3.   What do you mean by alphabet key? Ø Alphabet keys are the keys with letters on them (A to Z) that we use to type words. 4.   What is a shift key? Ø The Shift key types capital letters or special characters like @, #, $, etc. 5.   What is a caps lock key? Ø The Caps Lock key is used to type all letters in capital without holding the Shift key. 6.   Why do you use punctuation keys? Ø Punctuation keys are used to add symbols like commas (,), periods (.), question marks (?), and more to make sentences clear. 7.   What are the cursor control keys? Ø Cursor control keys, like the arrow keys, help move the cursor...

  Computer Network Introduction A computer network is a way to connect computers to share information and resources like files, printers, or the internet. For example, the computers in your school’s computer lab might be connected to share a printer. Types of Computer Networks LAN (Local Area Network): Covers a small area, like a school or home. Example: Computers in a classroom. WAN (Wide Area Network): Covers large distances, like the internet. MAN (Metropolitan Area Network): Connects computers in a city. Why Are Networks Useful? Sharing Resources: Many computers can use one printer. Communication: Send messages or emails easily. Internet Access: Connect to the world wide web. How Do Networks Work? Networks use devices like: Routers: Send data between networks. Switches: Connect devices within a network. Cables/Wi-Fi: Carry information between computers. Conclusion Computer networks connect computers to share...