Output Device

Computer Science SSS1 Second Term

Output Device

Week 1

Performance Objective

The student should be able to:

1. List out output device
2. Identifying output device
3. Switch on the monitor

Content

What Is an Output Device?

An output device is a piece of computer hardware that receives data from a computer and then translates that data into another form. That form may be audio, visual, textual, or hard copy such as a printed document.

The key distinction between an input device and an output device is that an input device sends data to the computer, whereas an output device receives data from the computer.

For example, using a microphone to record a podcast is an example of using an input device. Listening to the recorded podcast through a connected speaker is an example of using an output device. Both output and input devices are examples of auxiliary or peripheral devices.

10 Examples of Output Devices

1. Monitor
2. Printer
3. Headphones
4. Computer Speakers
5. Projector
6. GPS
7. Sound Card
8. Video Card
9. Braille Reader
10. Speech-Generating Device

1. Monitor

A monitor consists of a screen, circuitry, a power supply, buttons to adjust screen settings, and a casing that contains all of these components. A monitor displays data from a computer onto a screen so the user can interact with the data via a digital interface.

2. Printer

The function of a printer is to create a copy of whatever is sent from the computer to the printer. Printers take electronic data sent from a computer and generate a hard copy.

3. Headphones

Headphones output audio from a computer through two individual headphones for a single listener. Also known as earphones, headphones allow you to listen to audio without disrupting other people in the vicinity.

4. Computer Speakers

Computer speakers are hardware devices that transform the signal from the computer's sound card into audio. Speakers create sound using internal amplifiers that vibrate at different frequencies according to data from the computer. This produces sound.

5. Projector

As its name suggests, this output device "projects" computer images or video onto a wall or screen.

6. GPS (Global Positioning System)

 GPS is a radio-based navigation system that’s composed of a sender computer and a receiver. The sender broadcasts signals to 24 satellites that ping to the sender the exact location of the sender computer in the form of latitude and longitude coordinates. The satellites use microwave signals to “talk” to the GPS, giving information on location, vehicle speed, and a number of other pieces of data.

1. Sound Card

The sound card controls the output of sound signals, enabling devices like speakers and headphones to work. The sound card is known as an expansion card, which means it can be added to the motherboard. Although a sound card is not essential to a computer's basic functionality, you need one if you wish to play games,

8. Video Card

 As with the sound card, the video card is an expansion card that slots into the motherboard. The video card processes images and video, enabling visuals to be seen on a display. Most computers have basic video and graphics capabilities built into the computer's motherboard, but for faster, more detailed graphics, a video card is required.

9. Braille Reader

 A braille reader is a peripheral device that enables a blind person to read text displayed on a computer monitor. The text is sent by the computer to the device, where it is translated into a braille format and made readable by pushing rounded pins up through a flat surface. Braille readers are also called braille displays and come in various sizes. Braille readers come in the form of separate devices from a keyboard or as part of a keyboard. Most use piezoelectric technology, or electricity generated by mechanical stress, to create a single line of text at a time in the form of raised bumps.

This was the case until late 2018 when Blitlab proposed an electronic solution to the limited capabilities of braille readers. Blitlab, upon its release, will allow the visually impaired to use the internet and read books and newspapers more independently. The technology is still in development. The device will cost only around $500, which is little

10. Speech-Generating Device (SGD)

Also known as voice output communication aids, generate text to speech. A user types something and when the command is sent, the SGD reads the sentence out loud.

Slowly deteriorates nerves in the spine and brain that results in gradual loss of muscle control. This often includes the ability to speak.

• Touch Screen: Touch screens accept input in the form of touch and display the output from the computer.
• Network Card (NIC): A network card is an expansion card for a computer that allows the device to connect to the network or internet.