Objective
- Define the four types of Output
- Identify the different types of display devices
What are Output Devices ?
An output device is any computer component capable of conveying information to a user.
Commonly used output devices include display devices, printer, speakers, headset, data projector,facsimile machines and multifunction.
Commonly used output devices include display devices, printer, speakers, headset, data projector,facsimile machines and multifunction.
Other Output Devices
Data Projector takes the image that display on a computer screen and projects it onto a screen so that an audience of people can see the image clearly.
Two types of smaller, and lower cost units are LCD projector and DLP projector. LCD projector, which uses liquid crystal display technology, attaches directly to a computer and uses its own light source to display the information shown on the computer screen. DLP projector, which digital light processing projector uses tiny mirrors to reflect light, producing crisp, bright, colorful images that remain in focus and can be seen clearly even in a will-lit room. Facsimile (Fax) Machine is a device that transmits and receives documents over telephone line. Fax Modem is a communications device that allows you to send and sometimes receive electronic documents as faxes. also can be an external peripheral that plugs into a port on the back of the system unit or an internal card that i inserted into an expansion slot on the motherboard. Multifunction Devices (MFD) is a single piece of equipment that looks like a copy machine but provides the functionality of a printer scanner, copy machine, and perhaps a s fax machine. Terminals is a device that performs both input and output because it consists of a monitor (output), a keyboard (input), and a video card. Terminals fall into three basic categories Dumb terminals, Intelligent terminals, and Special-purpose terminals. Dumb terminals no processing power, and thus, cannot function as an independent device. Intelligent terminals has memory and a processor that has the capability of performing some functions independent of the host computer. Special-purpose terminals perform specific tasks and contain features uniquely designed for use in a particular industry, Two of these Special-purpose terminals are Point of sale terminals and Automatic teller machines. Point of sale (POS) terminal is used to record purchases at the point where the consumer purchases the product or service. Automatic teller machine (ATM) is a self service banking machine attached to a host computer through a telephone network. |
Output Devices for Physically Challenged Users
The growing presence of computers in everyone’s live has generated an awareness of the need to address computing requirements for those which physical limitations.
Types of Output
- Text consists of characters that are used to create words, sentences, and paragraphs.
- Graphics are digital representations of non text information such as drawings, charts, and photographs. Also animatedcan be giving them illusion on motion.
- Audio is music, speech, or any other sound .
- Video consists of images that are played back at speeds that provide the appearance of full motion.
What is Audio ?
Audio is music, speech, or any other sound. Audio output devices are the components of a computer that produce music, speech, or other sounds such as beeps.
Two commonly used audio output devices are speakers and headsets
Two commonly used audio output devices are speakers and headsets
What is Video Cards ?
To display color, a color monitor works in combination with a video card, which is included with today’s
personal computers. also called a graphics card or video adapter, converts digital output into analog video signal
that sent through a cable to the monitor.
personal computers. also called a graphics card or video adapter, converts digital output into analog video signal
that sent through a cable to the monitor.
What is Display Devices and Types ?
A display device is an output device that visually conveys text, graphics, and video information.
Display devices include CRT monitor, Flat-panel display, and High-definition televisions.
Display devices include CRT monitor, Flat-panel display, and High-definition televisions.
- CRT monitor, or monitor is a display device that consists of a screen housed in a plastic or metal case. CRT means
- Flat-panel display is a lightweight, thin screen that consumes less power that a CRT monitor. Two common types