Computer Hardware Input and Output Devices
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Computer Hardware Input and Output Devices

Explore the different types of input and output devices covered in Chapter 2 of Computer Skills. This includes keyboards, pointing devices, scanners, display devices, printers, and more, as discussed in lectures 7 and 8 by Dr. Fatma Sakr.

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Questions and Answers

What is the main purpose of pointing devices?

To select and manipulate objects, input data, and issue commands to the computer

What is the function of a stylus in the context of computer hardware?

To capture handwritten input as it is being written

What is the primary use of pen-based computers?

To issue commands and input data

What is the function of touch screens in the context of computer hardware?

<p>To select and manipulate objects, input data, and issue commands to the computer</p> Signup and view all the answers

In the context of computer hardware, what are graphics tablets or digitizing devices primarily used for?

<p>Capturing handwritten input electronically on the screen</p> Signup and view all the answers

What is the main function of scanners (optical scanners) as input devices?

<p>Captures images and transfers them to the computer in digital form</p> Signup and view all the answers

What is one of the primary uses of pen-based systems that capture handwritten input as it is being written?

<p>Transferring handwritten input to a computer using special paper with a grid of dots</p> Signup and view all the answers

What is the main purpose of pointing devices like joysticks, gamepads, and trackballs?

<p>Selecting and manipulating objects, inputting data, and issuing commands to the computer</p> Signup and view all the answers

What is a key feature of keyboards typically used in portable computers and mobile devices?

<p>&quot;Pen or touch input (on-screen keyboard)&quot;</p> Signup and view all the answers

What are mice commonly used for as pointing devices?

<p>Moving a pointer around the screen and clicking buttons to make selections</p> Signup and view all the answers

What is one primary function of portable computers and mobile devices in terms of keyboards?

<p>Used to enter characters at the location marked by the insertion point or cursor</p> Signup and view all the answers

What is a common feature of keyboards found in most computers today?

<p>Most computers today are designed to be used with a keyboard</p> Signup and view all the answers

What is one primary use of pointing devices like touch screens?

<p>Touching with the finger to select commands or otherwise provide input to the computer</p> Signup and view all the answers

What type of device presents output visually on some type of screen?

<p>Display device</p> Signup and view all the answers

What is the primary function of printers in the context of computer hardware?

<p>Visual output</p> Signup and view all the answers

What is the main characteristic of most displays today?

<p>Color displays</p> Signup and view all the answers

What type of devices are commonly used in portable computers and mobile devices?

<p>Display screens and keyboards</p> Signup and view all the answers

Which type of pointing devices are commonly used in the context of computer hardware?

<p>Pen-based systems and touch screens</p> Signup and view all the answers

What is the purpose of digital signage systems and digital billboards in terms of display devices?

<p>Visual output</p> Signup and view all the answers

Which type of printers use liquid ink or toner?

<p>Ink-Jet Printers</p> Signup and view all the answers

What is the standard for business documents in terms of printers?

<p>Laser Printers</p> Signup and view all the answers

What is the function of impact printers?

<p>Actually strike the paper to transfer ink</p> Signup and view all the answers

What type of printers are used to produce multipart forms?

<p>Dot Matrix Printers</p> Signup and view all the answers

What connection option is most common for laser printers?

<p>USB connection</p> Signup and view all the answers

Which type of display devices use filters, prisms, and multiple lenses to create 3D effects?

<p>3D Displays</p> Signup and view all the answers

What is the measure of screen resolution on a display device?

<p>Number of pixels</p> Signup and view all the answers

What type of projectors are pocket-size and connect to mobile and portable devices?

<p>'Pico' Projectors</p> Signup and view all the answers

Which type of display device physically connects to the system via a cable?

<p>'Wired' Displays</p> Signup and view all the answers

What is the primary purpose of data and multimedia projectors?

<p>'Printing all computer output'</p> Signup and view all the answers

'Tiled' projectors use multiple projectors to display content from a single source. What do 'Hologram' projectors use to create 3D images?

<p>All of the above</p> Signup and view all the answers

What do color printers commonly use for printing?

<p>Liquid ink or toner cartridges</p> Signup and view all the answers

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