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Networking and Telecommunications Class 10 Computer Science Chapter 1

Networking and Telecommunications Class 10 Computer Science Chapter 1 Introduction Telecommunication: Telecommunications refers to the transfer of information at a far distance. The communication media like telephones, telegrams, radios, and televisions facilitates us to transfer information over a long distance. So communications over a long distance with the help of telephones, mobiles or internet are called telecommunication. Computer Network: Network refers to the system of interconnected devices for transferring information from one device to another. A computer network refers to the interconnection of two or more than two computers for data communication. In other words, it is also known as the group of interconnected computers for the purpose of sharing resources like computer hardware or software. The Internet is the world's largest computer network where millions of computers are connected across the world for sharing resources like data, hardware or software. Computer ne...

Keyboard Shortcuts In MS-Excel

Keyboard Shortcuts In MS-Excel Keyboard Shortcuts In MS-Excel Keyboard Shortcut In MS-Excel Keyboard Shortcut Description Tab Move to the next cell , to the right of the currently selected cell. Ctrl+A Select all contents of a worksheet. Ctrl+B Bold all cells in the highlighted section. Ctrl+C Copy all cells in the highlighted section. Ctrl+D Fill down. Fills the cell beneath with the contents of the selected cell. To fill more than one cell, select the source cell and press Ctrl + Shift +Down arrow to select multiple cells. Then press Ctrl+D to fill them with the contents of the original cell. Ctrl+F Search current sheet. Ctrl+G Go to a certain area. Ctrl+H Find and replace. Ctrl+I Puts italics ...

Generation Of Computer

Generation of Computer Generation of computer The evolution of modern computers occurred in different phases. The development of modern digital computers during the different time periods is known as the generation of computers . There are five computer generations on the basis of major electronic components, size, speed, capacity, reliability, and performance. Five generations of computer 1. First Generation Computer 2. Second Generation Computer 3. Third Generation Computer 4. Fourth Generation Computer 5. Fifth Generation Computer First Generation Computer First-generation computer Duration (1946-1959) Major electronic component/device: Vacuum Tube Size: Very big Performance: Very slow Storage: Very low Capacity: low Programming language used: machine level Ex...

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