What Is Computer Hardware? – Computer Hardware And Parts

In a computing context, the term ‘hardware’ refers to the electrical parts and components inside a computer system which power it. The operating system (such as Windows 7) and other software (for example Firefox) are then installed upon – and make use of – the hardware parts and components.One type of hardware is a Hard Drive. This component stores data on a permanent basis (i.e. after the computer is turned off). Examples of data stored would include the operating system, software, pictures, music and other files.Another example of hardware would be the Central Processing Unit – also known as the CPU or the processor. This is the ‘brains’ of a computer system in that it’s responsible for carrying out all the instructions and computations for the system.RAM (Random Access Memory) is another hardware component. The RAM temporarily stores data generated by the computer, and once the system is switched off the data in the RAM is erased (unlike data in a Hard Drive). For example, if you are typing a letter up but you have not saved it yet, the letter data would be stored in the RAM. Then when you save the document, it would be saved in a more permanent manner to the Hard Drive.There are just three types of computer hardware parts. Other common components include the following:
Motherboard – This is the large rectangular component which all the other pieces of hardware connect to. This is where its name is derived from (i.e. the mother board).
Power Supply Unit (PSU) – This supplies power to the various hardware components. It gets its power as AC (alternating current) power from a mains wall socket, and converts it to lower voltage DC (direct current) power which can then be distributed to the hardware components in a safe manner.
Optical Disk Drive – You can insert CDs and DVDs into this for them to be used by the computer system.
Graphics Card – This is a relatively powerful component which generated and outputs graphics to the computer monitor. This isn’t required in a system, although all gaming computers have one.
Sound Card – This generates and outputs digital sound (audio). Like graphics cards, not all computers have these although systems which are built with audio creation and manipulation in mind will usually have one.
Case – This isn’t hardware per se. It does, however, house all the above computer components and it comes with a power/reset button, USB inputs and more.

Computer Hardware Sales – Computer Hardware And Parts

Hardware for computers includes the computer itself, the monitor, keyboard, printer, mouse and speakers. There is also hardware inside the computer including the motherboard that holds the main processing chips that make up the central processing unit (CPU). The hardware processes the commands it receives from the software, and performs tasks or calculations.There are basically four places to buy hardware for your computer. These are auctions, the Internet, local retailers and mail orders. The following is a condensed review of each of the above.Auctions are the most popular sites for purchasing hardware for your computer. Low cost is the main factor that drives people to auctions. However, there are some things that you should be aware of. Unfortunately, on-line auctions are riddled with scams. As a matter of fact, it is the number one place for thefts and scams. You need to make sure that you know as much as you can about the seller so that you will not be buying stolen or copied, illegal goods. Online auction sites like e-bay or Yahoo are pretty reliable sites to go to if you are looking for safe auctions.The Internet is a popular place to check out computer hardware sales, but you must be sure that when you buy hardware (or any purchase) over the Internet, the site offers some kind of security to prevent information about you from being stolen.Your local computer store is one of the safest places you can go to buy hardware for your computer. Just make sure the store has knowledgeable salespeople. These days, good help is hard to find, and a sales representative may not have answers to your questions or give you false information. You must also inquire about “return policies” in case you buy defective parts.Finally, mail ordering computer parts is somewhat safe if you follow a few common sense steps. Make sure that the mail order company has a valid phone number where you can speak with someone if you need to. Know the company’s return policy and verify the warranty on the products you are purchasing.