Computer Hardware

Power over Ethernet is a system whereby a small amount of electrical current is sent over the network cable. This is done so that some devices can draw power from the network itself thereby eliminating the need for an electrical outlet. This is generally only used for low-power devices such as cameras, routers and the like in places where it would be inconvenient or expensive to run mains power.

Input devices.

Based on the definitions at the associated links, a bus is an electronic connection which allows the transfer of information, whereas a port is a socket in the side of a computer which allows a matching plug to connect to that computer.

Shorthand for "mega." For example, 10 megs means 10 megabytes. It generally refers to bytes, not bits.

firewire header is aserial bus used to exchange digital and audio data with high performace abilities.

The ISP allows, or can provide, up to 100mbps of data transfer between your computer/connected devices, to anything else.

The ITT Homework slot.

MAINFRAME is a some what antiquated term for a main server or a large machine capable of a workload much beyond the capability of a standard desktop unit. Also called "servers" or "Big iron" or even "gibsons" after the author of sci-fi novels the term has fallen into disuse these days.

Rare is it to see people putting all their money into a mainframe any longer. Parallel computing and cluster computing has enabled server farms to do the work of a mainframe for less money and less power! If you wish to see an example of what might be called a "Mainframe" check out the manufacturer "Cray" for some of their super computers.

For more detailed explanations I might recommend this page.

"http://en.wikipedia.org/wiki/Mainframe_computer"

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Less than 1mb. There is 1024kb in a meg. 736kb is far less than 1mb.

When removing the cover from a computer, you should take care to remove only the screws that hold the cover on. Otherwise, you may remove more than what you intend. For instance, unless you want to remove the power supply unit, there is no reason to remove its screws.

If your motherboard becomes unstable,or you lose some functions like a USB port stops working, or you are tyring to take advatage of a new feature or component then you might need to upgrade the ROM BIOS chip by flashing it.

A star topology is a method of connecting several computers to one another in a network. The cables used in a star topology are twisted pair cables or coaxial cables. Coaxial cables would be the cheapest solution.

There are many different types of video memory. Some video memory types are SGRAM, VRAM, RDAM, WRAM, GDDR3 and GDDR5.

The PGA socket has pins on the bottom of the package aligned in uniform rows.

The SPGA socket has pins on the bottom of the package that are staggered to squeeze more pins into a small space.

For a computer application to be called a virus, it must do several things.

Most importantly, it must be able to copy itself into the computer in such a way that the copies can also copy themselves into the computer as well.

After a computer virus is able to spread, the virus programer is able to do other activities depending on his own goals. He might want to have your computer send emails to everyone in your address book. He might want to detect passwords and send the passwords back to himself. He might want to damage the computer in some way by writing damaging code into the operating system or onto the directory of the hard drive.

The most common way that computer viruses attack computer programs is by adding the virus code onto the end of the program so that each time the program is run, the virus code is run as well. The original program might be the operating system or some other application.

When the computer is busy running the virus code, it may not run the original program, or it may cause so much activity that the whole computer slows down or crashes.

Databases, Networking, and Operating Systems.

I believe programming splits between the three through how the programmer uses the API. There probably is a different answer, but i feel that this is the most correct.

Memory is a loose term when it comes to computers. Memory can mean one of two things that are both primary and absolutely necessary to run a computer. One is RAM, which is the smaller memory that helps with computer performance. Without it, the computer will not start up at all because the RAM is used for essential backround tasks. The other memory is HDD memory (hard drives). This memory is used to store information that does not need to be accessed instantaneously. HDD memory is used to store the operating system of a computer, as well as other information such as programs and documents. There is no "primary" memory, in a computer, as it can mean two different things that are both invaluable.

That is Serial ATA. The ATA stands for Advanced Technology Attachment. The standard was called ATA until there were serial ATA drives, then the old way became known as PATA or Parallel ATA. The problem with the old ATA standard was that with the 40 pins, it was difficult to go faster than 133 MB/S. Keeping the same instruction and data format, but converting to a serial data standard allowed the data rate to be safely increased to 150 MB/s. Now the 3rd generation of SATA allows a data rate up to 600 MB/S.

output means the result which we get from the computer

it can be in any format,, e,g vedio which we see on the screen

sound which we here from the speaker

or the printed form hard copy produced by the printer

thankx for readin