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Showing posts from September, 2017

What is mouse and types

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               Computer Mouse A  computer mouse  is a handheld hardware  input device  that controls a  cursor  in a  GUI  and can move and select  text ,  icons ,  files , and  folders . For desktop computers, the mouse is placed on a flat surface such as a mouse pad or a desk and is placed in front of your computer. The picture to the right is an example of a desktop computer mouse with two buttons and a wheel. Who invented the mouse? The mouse was originally known as the  X-Y Position Indicator  for a Display System and was invented by  Douglas Engelbart  in  1963 while working at  Xerox PARC . However, due to Alto's lack of success, the first widely used application of the mouse was with the  Apple Lisa computer . Today, this pointing device is on virtually every computer. What are the functions of a mouse? Below is a list of each of th...

Heat sink

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                        Heat sink A  fan-cooled   heat sink on the processor of a personal computer. To the right is a smaller heat sink cooling   another integrated circuit   of the motherboard. A  heat sink  (also commonly spelled  heatsink [1] ) is a passive  heat exchanger  that transfers the heat generated by an electronic or a mechanical device to a  fluid  medium, often air or a liquid coolant, where it is  dissipated  away from the device, thereby allowing regulation of the device's temperature at optimal levels. In computers, heat sinks are used to cool  central processing units  or  graphics processors . Heat sinks are used with high-power semiconductor devices such as power  transistors  and optoelectronics such as lasers and light emitting diodes (LEDs), where the heat dissipation ability of the component itself is ...

Network card

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     Network interface controller A  network interface controller   ( NIC , also known as a   network interface card ,   network adapter ,   LAN adapter   or   physical network interface , [1]   and by similar terms) is a   computer hardware   component that connects a   computer   to a   computer network . [2] Network interface controller A 1990s   Ethernet   network interface controller that connects to the motherboard via the now-obsolete   ISA bus . This combination card features both a   BNC connector   (left) for use in (now obsolete)   10BASE2   networks and an   8P8C connector (right) for use in   10BASE-T   networks. Connects to Motherboard  via one of: Integrated PCI   Connector ISA   Connector PCI-E FireWire USB Thunderbolt Network via one of: Ethernet Wi-Fi Fibre Channel ATM FDDI Token...