Tuesday, 17 March 2015

Internal parts of a computer

Internal Parts of a Computer
Graphics Card:

A graphics card, also known as a video card, is a piece of hardware installed in a computer that is responsible for rendering the image on the computer’s monitor or display screen. The images you see on you are made of tiny dots called pixels. At most common resolution settings, a screen displays over a million pixels, and the computer has to decide what to do with every one in order to create an image and this job is done by a graphics card. A graphics card must work very hard to render images to the screen. Unlike text files, graphics images are much larger files consisting of great amounts of data that must be processed by the graphics or video card.
Description: https://encrypted-tbn2.gstatic.com/images?q=tbn:ANd9GcS3wSoRKoXuw2LmVlORgENHBSjOVjRJmuza6ubh2IGXamLu-3d_5w
Disk Array Controller

A disk array is a hardware element that contains a large group of hard disk drives (HDDs). It may contain several trays and has an architecture which improves speed and increases data protection. The system is run via a storage controller, which coordinates activity within the unit. Disk arrays form the backbone of modern environments. A storage area network contains one or more disk arrays that function as the source for the data which is moved in and out of the SAN.
Description: https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcTL0F9J5RK3NjbuN54WORDIhMq_e4kt9eoc5Xbxpxg7Bw4opGFt

PCB

PCB’s (Printed circuit board) or adapters come in tows, the sound card and the video graphics card. They enhance the sound and video quality of the computer.It is also the skeleton of most electronic devices. It provides not only a solid physical base for the components to be mounted upon, but also the electrical interconnects (traces) between the components. 

Description: http://www.pcbtrain.co.uk/layout/content/pcb-fabrication.jpg

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