The Concept of Internet Wires Cables Wifi | AZEEM KHAN

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  Printers:    Printer  are Output devices used to prepare permanent Output devices on paper.  Printers can be divided into two main categories: Impact Printers : Impact Printer In this hammers or pins strike against a ribbon and paper to print the text. This mechanism is known as electro-mechanical mechanism. Non-Impact Printers  : There printers use non-Impact technology such as ink-jet or laser technology. There printers provide better quality of O/P at higher speed.  Impact Printer Two Types: Character Printer : It prints only one character at a time. It has relatively slower speed. Eg. Of them are Dot matrix Printer. Laser Printer: Laser Printer is a type of printer that utilizes a laser beam to produce an image on a drum. The light of the laser alters the electrical charge on the drum wherever it hits. The drum is then rolled through a reservoir of toner, which is picked up by the charged portions of the drum. Finally, the toner is transferred to...
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Computer Information

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  What is Computer? A  computer  is an electronic device that manipulates information, or data. It has the ability to  store ,  retrieve , and  process  data. You may already know that you can use a computer to  type documents ,  send email ,  play games , and  browse the Web . You can also use it to edit or create  spreadsheets ,  presentations , and even  videos.
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  Software: Software is a set of instructions, data or programs used to operate computers and execute  specific tasks is Called Software. How many Types of Software: There are  two  main types of software: systems software and application software. Systems software includes the programs that are dedicated to managing the computer itself, such as the operating system, file management utilities, and disk operating system (or DOS). System Software: System Software is the type of software which is the interface between application software and system. For Example:   System software’s are compiler, assembler, debugger, driver, etc. Application Software: On other hand Application Software is the type of software which runs as per user request.  It runs on the platform which is provide by system software. For Example:   On other hand some examples of application software’s are word processor, web browser,media player, etc.
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