Slots are an opening in a computer where a circuit board can be inserted to add new capabilities. All personal computers contain expansion slots for adding more memory, graphics capabilities, and support for special devices. Expansion slots come in different flavours, which will be described below. An alternative explanation for expansion slots can be found here.


CDs are the most common type of removable media. They are inexpensive but also have short life-span. There are a few different kinds of CDs. CD-ROM which stands for Compact Disc read-only memory are popularly used to distribute computer software although any type of data can be stored on them. CD-R is another variation which can only be written to once but can be read many times. CD-RW (rewritable) can be written to more than once as well as read more than once. Some other types of CDs which are not as popular include Super Audio CD (SACD), Video Compact Discs (VCD), Super Video Compact Discs (SVCD), PhotoCD, PictureCD, CD-i, and Enhanced CD.
High-speed Internet connectivity and cloud computing have recently given rise to a new phenomenon for hardware resources to be delivered over the Internet. This development was initially known as "Hardware as a Service" or HaaS. However, this term has now been sub-divided in common usage into Platform as a Service or PaaS, and Infrastructure as a Service or IaaS.

Battlefield servers have unique requirements in other areas besides environmental. One is reliability: For rackmount servers, the ability to quickly replace a module due to failure or for an upgrade drives the need for modularity and hot-swap line replacement units (LRUs). Every module of the system – from power supply and fan assemblies to VPX-based motherboard and drive assemblies – must be replaceable in seconds. This is the downfall of typical commercial off-the-shelf (COTS) 1U or 2U servers: If there’s a failure, the entire server must be replaced.
USB, short for Universal Serial Bus, is an industry standard developed in the mid-1990s that defines the cables, connectors and communications protocols used in a bus for connection, communication, and power supply between computers and electronic devices.[1] A bus is a communication system that transfers data between components inside a computer, or between computers.[2]
Here is the flat "motherboard", a little smaller than a 8.5 x 11 piece of paper, that the various components plug in to. At the center is the CPU. At the far right is the RAM memory. Just to the right of the CPU are a couple support chips. Prominently, one of the chips is covered with a copper "heatsink" .. this presses tightly against the chip, dissipating the heat from the chip into the surrounding air. The CPU also had a very large heatsink, but it was removed to make the CPU visible.

If you're shopping for popular computer components like external hard drives or graphics cards, you're sure to find excellent deals during end-of-year sales, especially Black Friday and Cyber Monday. When you're looking for replacement or individual parts, there isn't a particular time of year when you're bound to find the best prices. While the holidays are as good a time as any, you might also try computer suppliers during other holidays, such as Labor Day or Memorial Day, as these are popular times for all kinds of stores to have sales.
Random Access Memory, or RAM, is hardware found in the memory slots of the motherboard. The role of RAM is to temporarily store on-the-fly information created by programs and to do so in a way that makes this data immediately accessible. The tasks that require random memory could be; rendering images for graphic design, edited video or photographs, multi-tasking with multiple apps open (for example, running a game on one screen and chatting via Discord on the other).
For instructions on installing the processor, power supply, and putting the motherboard in the case, consult each component’s owner’s manual. The act of installation or assembling parts isn’t complicated, but there is the potential for errors to occur. That’s why it’s best to follow the more detailed step-by-step instructions for each specific part.
that will give you an idea on how many watts you need for your PC. It is best to do research on a power supply yourself if you are building a PC to see what you need for your parts. A pre-built PC and laptop will come with a power supply installed of course that will supply power to the computer, so you won’t have to worry about choosing one if you already have your PC built, however it is useful to know incase you ever upgrade to a more energy efficient supply. The power supply is located typically on the top or bottom of the computer case exposed in the back so you can connect it to a wall socket. Your power supply will not effect your computer’s performance, but is still necessary in order for the computer to run in the first place
Many desktop motherboards have sound cards built-in, allowing for audio playback without the need for a dedicated sound card. However, the quality of these built-in sound cards is generally not on par with high-end dedicated sound cards. For tasks that require high definition audio playback, dedicated sound cards are usually better than onboard solutions.
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