- Input Unit
- Output Unit
- Processor
- Control Unit
- Arithemetic and Logic Unit
- Registers
- Data Bus
- Address Bus
- Control Bus
- Primary Memory
- Secondary Memory
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Any peripheral that receives or displays output from a computer. In the picture to the right, is an inkjet printer and a good example of an output device that can make a hard copy of anything on a computer.
Below is a listing of all the different computer output devices found on a computer:
Flat panel: Thin screen displays found with all portable computers and becoming the new standard with desktop computers. Instead of utilizing the cathode-ray tube technology flat-panel displays use Liquid-crystal display (LCD) technology or other alternative making them much lighter and thinner when compared with a traditional monitor. In the picture to the right, is of the Samsung 915V flat-panel display and an example of what a flat-panel display may look like.Monitor: Also called a video display terminal (VDT) and video display unit (VDU), a monitor is a video display screen and the hard shell that holds it. In its most common usage, monitor refers only to devices that contain no electronic equipment other than what is essentially needed to display and adjust the characteristics of an image.Like most TVs, the computer monitor has a CRT (Cathode Ray Tube) that is found inside the computer monitor as illustrated in the picture to the right. The CRT is the main component and most expensive part within your computer monitor.Printer: An external hardware device responsible for taking computer data and generating a hard copy of that data. Printers are one of the most used peripherals on computers and are commonly used to print text, images, and photosProjector: An output device that can take the display of a computer screen and project a large version of it onto a flat surface. Projectors are often used in meetings and presentations so that everyone in the room can view the presentation. In the picture to the right, is a ViewSonic projector and an example of what a projector may look like. Projectors used with computers are small devices that are rarely much larger than a toaster and typically weigh a few pounds.Sound card: Alternatively referred to as a sound board or an audio card, a sound card is an expansion card or integrated circuit that provides a computer with the ability to produce sounds that can be heard by the user either over speakers or headphones. Below is an image of the Creative Sound Blaster X-Fi Xtreme Audio sound card.Speakers: A speaker is a term used to describe the user who is giving vocal commands to a software program.A hardware device connected to a computer's sound card that outputs sounds generated by the computer. In the picture to the right, is the Altec Lansing VS2221 speakers with subwoofer and resemble what most computer speakers look like today.When computers were originally released they had on-board speakers that generated a series of different tones and beeps. As multimedia and games became popular, higher quality computers speakers began to be released that required additional power. Because computer sound cards are not powerful enough to power a nice set of speakers today's speakers are self-powered, relatively small in size, and contain magnetic shielding.Video card: Alternatively referred to as a graphics card, video card, video board, or a video controller, a video adapter is an internal circuit board that allows a display device such as a monitor to display images from the computer. Today's video cards are most commonly connected to the AGP, PCI, or PCIe expansion slot on the motherboard, however, can also be found on-board.
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