CABINET

CABINET: The box that houses the motherboard, hard disk, CD-Rom, Floppy Drive, VGA, including the power supply
(SMPS) is called the cabinet. Computer cabinets are designed to rest all these things in different preassigned areas as per
the industry standard. The color, and style of the cabinet has nothing to do with its performance. SMPS in built the
computer cabinet, controls and converts the AC current in the 9/12 Volt DC current as required by the components of the
computer.
UPS: Last but not the least, it is the external device which regulates, streamlines and corrects the input voltage and
current from the power source and gives to the computer. Its power or units are measured in KVA Smaller UPS come with
an inbuilt battery back up of around 20 minutes, larger ones come with external battery attachments and the size of the
battery bank determines the back up it provides in case of power failure. The concept of UPS is crucial in regions
experiencing frequent power cuts, fluctuations and surges primarily because
l Switching off the computer without proper shutting down, leads to corruption of software, and may
require technical support or reinstallation.
l A Surge/Spike or a fluctuation may lead to short circuit on the motherboard or hard disk crash, or
damaging the monitor or any other component.
l To Increase the life and efficiency of the hardware.
IMPORTANT:
It is important to understand that computers components must match in capability and performance with each other
before they can perform best as part of whole computer. For example, a 2.4 GHz Intel Pentium Processor shall not be able
to perform to its fullest with 128 Mb RAM, or 400 MHz Motherboard with onboard VGA for graphic Intensive
applications such as Corel Draw or Photoshop. A better combination would be 1024 Mb RAM with a VGA card with its
individual 256 Mb RAM. For office applications, even the last generation Intel Celerons work well with 128 Mb RAM.
So before you decide to buy your computer, you must define what you intend to use it for.