UPS

also known as a battery back-up provides emergency power and, depending on the topology, provide line regulation as well to connected equipment by supplying power from a separate source when utility power is not available. It differs from an auxiliary power supply or standby generator, which does not provide instant protection from a momentary power interruption. A UPS, however, can be used to provide uninterrupted power to equipment, typically for 5-15 minutes until a emergency power system can be turned on or utility power is restored.While not limited to safeguarding any particular type of equipment, a UPS is typically used to protect computers, data centers, telecommunication equipment or other electrical equipment where an unexpected power disruption could cause injuries, fatalities, serious business disruption or data loss. UPS units come in sizes ranging from units which will back up a single computer without monitor (around 200 VA) to units which will power entire data centers or buildings (several megawatts).

Cashing

A computer case (also known as the computer chassis, cabinet, tower, box, enclosure, housing or simply case) is the enclosure that contains the main components of a computer. It has also been erroneously called the CPU, however this is an entirely different component. Cases are usually constructed from steel (often SECC - Steel, Electrogalvanized, Cold-rolled, Coil), aluminium, or plastic, although other materials such as wood and plexiglas have also been used in case designs.

Moniter

With a resolution of 1440 x 900 and wide workspace, you can watch videos, edit photos, surf the net or play games with the HP w1907. Its wide aspect ratio and fast response time bring work and play brilliantly alive when you plug it into your HP PC.

HDD

Gone are the days when an average Joe's digital footprint amounted to just a few megabytes. With ever-growing digital photos, song and movie collections, an 80 GB hard disk doesn't take long to fill these days! But take heart - look out for cheaper, faster and much larger storage devices in this coming year.Stunning advances in magnetic and solid state technology have resulted in affordable 500 GB hard disks and 8 GB pen drives. Also, keep your eyes peeled for 'hybrid' hard disks that will enhance your computing experience with instant start-up computers, and blazing quick programming response.

Intel® Processors

The CPU is the brain of any PC. The CPU works by taking deta out of memory , processing it and placing it back into memory it is through memory that the other devices that make up the PC interact with the CPU it may be helpful if you think of the CPU as an agents pending its time going from the one device to another , multitasking its help is needed.if the processing job the CPU is asking to do is lengthy , it may not be available to the other devices connected to the PC until that job is completed . this process explains why sometime you can type a command and it seems to take a while for the computer to respond. the CPU was processing another instruction , and took a moment for it to get to the keyboard's memory location , retrieve your key stroke, determine what keystroke meant , and execute that instructionThe processor's performance is measured in terms of the amount of data it can process at one time and the speed at which it can process that data . than data is measured in bits processing speed in megahertz ( MHz ).