Computer Hardware Chapter 6: Input and Output

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Questions and Answers

What is the main function of input devices?

To convert user input into a form the system unit can process (correct)

To store data temporarily

To process information

To display output to the user

What type of device recognizes image capturing devices and audio-input devices?

Image capturing devices

Input devices (correct)

Scanning devices

Pointing devices

What is the purpose of output devices?

To store data temporarily

To process information

To display output to the user (correct)

To convert user input into a form the system unit can process

What type of device is an example of a combination input and output device?

Telephone Signup and view all the answers

What is the importance of ergonomics in computing?

To minimize physical damage Signup and view all the answers

What type of printer is an example of a cloud-based printing feature?

Cloud printer Signup and view all the answers

What is the primary function of input devices?

To translate data into a form that the system unit can process Signup and view all the answers

What type of mouse uses radio waves or infrared light waves?

Wireless mouse Signup and view all the answers

What is the primary function of scanners?

To convert scanned data into a form the system unit can process Signup and view all the answers

What type of device is used to interpret encoded information on debit, credit, and identification cards?

Magnetic card reader Signup and view all the answers

What is the primary function of game controllers?

To provide input to computer games Signup and view all the answers

What type of device uses handwriting recognition software?

Stylus Signup and view all the answers

What is the main purpose of a Magnetic-ink character recognition (MICR) device?

Used by banks to read encoded characters on checks Signup and view all the answers

What is the primary function of an Optical-character recognition (OCR) device?

To read preprinted characters such as wand scanners Signup and view all the answers

What is the primary function of an Optical-mark recognition (OMR) device?

To sense the presence or absence of marks Signup and view all the answers

What is the primary function of a digital camera?

Capture images digitally and store in memory Signup and view all the answers

What type of display is also referred to as a screen or display screen?

Monitor Signup and view all the answers

What is the main advantage of using e-books?

They allow users to enjoy reading on the go Signup and view all the answers

What type of printers use a laser light beam to produce images?

Laser printers Signup and view all the answers

What is the purpose of ergonomics in IT hardware design?

To fit the task to the user and avoid health issues Signup and view all the answers

What is the primary function of technical writers?

To prepare instruction manuals and technical reports Signup and view all the answers

What is the term for using the Internet to make voice calls?

Voice-over IP (VoIP) Signup and view all the answers

What is the expected annual salary range for technical writers?

$44,000 to $58,000 Signup and view all the answers

What is the primary function of augmented reality displays?

To instantly view data from computers and the Internet Signup and view all the answers

Study Notes

Input Devices

Definition: Convert user inputs into a form that the system unit can process
Types:
- Keyboards (traditional, laptop, virtual, thumb)
- Pointing devices (mouse, touchpad, game controller, stylus)
- Scanning devices (optical scanners, RFID readers, recognition devices)
- Image capturing devices (digital cameras, webcams)
- Audio-input devices (voice recognition systems, microphones)

Keyboard Entry

Types of keyboards:
- Traditional keyboards
- Laptop keyboards
- Virtual keyboards
- Thumb keyboards

Pointing Devices

Provide an intuitive interface by accepting pointing gestures
Types:
- Mouse (optical, wireless)
- Touch screen
- Game controller
- Stylus

Scanning Devices

Convert scanned data into a form the system unit can process
Types:
- Optical scanners (flatbed, document, portable, 3D)
- RFID readers
- Recognition devices (magnetic-ink character recognition, optical-character recognition, optical-mark recognition)

Image Capturing Devices

Create or capture original images
Types:
- Digital cameras
- Webcams

Audio-Input Devices

Use a microphone, sound card, and special software
Types:
- Voice recognition systems

Output

Definition: Processed data or information
Types:
- Text
- Graphics/photos
- Audio & video

Monitors

Features:
- Clarity
- Resolution/pixels
- Dot pitch
- Contrast ratios
- Size
- Aspect ratio
Types:
- Flat-panel monitors (LCD, LED, OLED)
- Curved monitors
- E-book readers
- Digital/interactive whiteboards
- Ultra High-definition television (UHDTV)
- Digital Projector

Printers

Features:
- Resolution
- Color
- Speed
- Memory
- Duplex printing
Types:
- Ink-jet printers
- Laser printers
- 3D Printers
- Cloud printers
- Thermal printers
- Plotters

Audio and Video Devices

Translate audio information from the computer into sounds
Types:
- Speakers and headphones
- Bluetooth Technology

Combination Input and Output Devices

Multifunctional devices (MFD)
Telephones (Telephony and Internet Telephony, VoIP)
Drones and Robots
Virtual Reality (headgear with gloves)

Ergonomics

Study of human factors related to things people use
Fit the task to the user to avoid:
- Eyestrain and headache
- Back and neck pain
- Repetitive strain injury

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Description

Test your knowledge of computer hardware, covering input devices such as keyboards and pointing devices, as well as output devices like monitors and printers. Learn about different types of input and output devices and their features.