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Input/ Output Devices in a Computer System

There are many different types of consumer electronics devices. The categories are smart phones, laptops, netbooks, notebooks, digital cameras, video game consoles, and a wide variety of other devices. Whatever your needs, you should know what kinds of discounts and deals are available to you. You need to know where to find the best items on sale and how to save the most money on the items that you do buy.


Smartphones are by far one of the biggest categories of devices. As a rule, smartphones are the only type of device that is typically required to carry around with you at all times. In the past, people who needed a smartphone were limited to the cellular service provider that they had. Today however, many more options have become available for mobile phone users.

Phones can be broken down into several different categories. Smartphones are first and foremost a communication device. A lot of people use their phones as an almost daily personal organizer, and this means that you will want to have a good phone with several good features. Some phones offer instant messaging, quick texting, and emailing capabilities. Other phones allow you to make calls, play music, take pictures, and access the web on your phone while you are carrying it with you.

Next, the next category of devices is usually the keyboard. Everyone has at least one, if not more than one input device that they frequently use. For instance, if you are using a keyboard and mouse, you will want to have both a mouse and a keyboard. A keyboard and mouse can often be used in conjunction with one another, but a keyboard and a scanner often work separately. The keyboard and the scanner often make excellent choices for those who like to type over the Internet, and they will make an excellent choice for those who like to carry around a small desktop PC.

Another group of input devices fall between the two categories mentioned above and into the category of peripheral devices. These are devices that are designed to enhance the functionality of a computer, but that are designed outside of the main body of the unit. For example, a CD player and a printer would be considering peripheral devices, while a digital camera and its associated software are integral to the camera itself. In the same way, a security system and a home wireless network would be considering a peripheral device, while its underlying, central processing unit would be considered a primary device.

Of all the peripheral devices, the most common are printers and scanners. Printers are necessary for anyone who needs to produce photos and images, whether the images are simply meant for email or are for formal business presentations. Scanners are useful for anyone who needs to scan items such as receipts and other documents. The best part about peripheral devices is that they are generally affordable and can be purchased within any price range.

A computer case, on the other hand, tends to be much larger and bulkier than most peripheral devices. While it would still be considered a peripheral device, a computer case can act as a stand-alone device, along with a mouse, keyboard, and monitor. Computer cases also tend to include a tower for the CPU, a number of external drives, and an internal scanner or laser printer. Because most people will not want to take out all their peripheral devices just to print off a document, the internal scanner or laser printer is usually included in a computer case.

Computer cases and towers tend to house a lot of the processing system itself, so they can often be considered the “mother-board” of the computer system. This is because they are where the devices connected to the system – by plugging them into the output devices, and are the devices responsible for transmitting signals to the central processing system and back down the line to the rest of the computer. Because they are usually pretty big (as in the case of the computer case), they also house a number of output devices, some requiring multiple outputs, and some may require multiple outputs for different purposes (like a printer that can use the printer itself as an input device and use the video circuitry on the tower as an output). A number of these devices are also needed to connect various input devices, so one can see why they are all kept in one place (or at least contained in the same case).

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