IT Essentials: Input and Output Devices
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Questions and Answers

Which type of digital camera is primarily used for video recording?

  • Digital camcorders (correct)
  • Webcams
  • Digital still cameras
  • DSLR cameras

What can voice input systems be primarily used for in computing?

  • Enhancing sound quality
  • Providing spoken instructions (correct)
  • Storing audio files
  • Performing audio editing

Which system is used to input existing music from external sources?

  • Speech recognition tools
  • Digital audio workstations
  • Microphone arrays
  • CDs or Web downloads (correct)

For original music compositions, which device is NOT typically used to input music?

<p>Flatbed scanners (A)</p> Signup and view all the answers

Which technology is used for inputting audio data into a computer?

<p>Audio Input (D)</p> Signup and view all the answers

What is the purpose of measuring print resolution in dpi?

<p>To evaluate the quality of the printed output (C)</p> Signup and view all the answers

Which type of printer is commonly considered the standard for business documents?

<p>Laser printers (C)</p> Signup and view all the answers

What type of connection is most commonly used for personal printers?

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

Which of the following is a characteristic of ink-jet printers?

<p>Spray droplets of ink onto paper (B)</p> Signup and view all the answers

What is a common application of special purpose printers?

<p>Producing barcodes and labels (D)</p> Signup and view all the answers

How does print speed vary among printers?

<p>PPM can range from about 15 to 65, depending on the printer (B)</p> Signup and view all the answers

What is the typical print resolution range for laser printers?

<p>600 to 2,400 dpi (B)</p> Signup and view all the answers

Which of the following statements is true about multifunction printers?

<p>They can perform multiple functions like copying and scanning (D)</p> Signup and view all the answers

What is a primary characteristic of flat-panel displays compared to CRT displays?

<p>They occupy less desk space. (C)</p> Signup and view all the answers

What does screen resolution refer to in display devices?

<p>The number of pixels used, determining information displayed. (A)</p> Signup and view all the answers

Which interface is NOT commonly used to connect monitors to a computer?

<p>USB-C (C)</p> Signup and view all the answers

What type of display presents outputs visually in various devices, not just computers?

<p>Display Screen (A)</p> Signup and view all the answers

Which statement about color displays is true?

<p>Most modern displays are color displays. (C)</p> Signup and view all the answers

What determines the aspect ratio of a display device?

<p>The physical dimensions of the screen. (B)</p> Signup and view all the answers

Which of the following best describes a CRT display?

<p>It is large and bulky compared to modern displays. (A)</p> Signup and view all the answers

Which factor affects how much information can be displayed on the screen at one time?

<p>Screen resolution. (C)</p> Signup and view all the answers

What is the primary function of an optical mouse?

<p>To track movements using a light source. (C)</p> Signup and view all the answers

With handwriting recognition, what happens to the text input?

<p>It gets saved as a digital image. (D)</p> Signup and view all the answers

What type of device looks like an upside-down mouse with a ball on top?

<p>A trackball. (A)</p> Signup and view all the answers

What is the benefit of source data automation?

<p>It captures data directly from source documents. (C)</p> Signup and view all the answers

What defines the quality of scanned images?

<p>The optical resolution in dpi. (C)</p> Signup and view all the answers

Which type of barcode is commonly used in retail for product identification?

<p>Universal Product Code (UPC). (D)</p> Signup and view all the answers

What technology allows RFID tags to communicate data?

<p>Radio frequencies. (C)</p> Signup and view all the answers

Which type of reader is specifically used for automatic check processing in banks?

<p>Magnetic Ink Character Recognition (MICR) Reader. (B)</p> Signup and view all the answers

What is the primary role of Optical Character Recognition (OCR) devices?

<p>To convert scanned text characters into editable text. (B)</p> Signup and view all the answers

What is a common application of biometric readers?

<p>Access control for secure locations. (A)</p> Signup and view all the answers

How do digital cameras primarily store images?

<p>Using flash memory. (A)</p> Signup and view all the answers

Which of the following is NOT a type of scanner?

<p>Liquid scanner. (D)</p> Signup and view all the answers

What kind of technology is used in mobile remote deposit capture?

<p>Advanced imaging technology. (B)</p> Signup and view all the answers

What is the main function of a computer keyboard?

<p>To enter characters at the cursor location (D)</p> Signup and view all the answers

Which of the following is NOT a type of keyboard commonly used on mobile devices?

<p>Wireless mechanical keyboard (A)</p> Signup and view all the answers

What is the function of a pointing device?

<p>To select and manipulate objects (C)</p> Signup and view all the answers

Which type of mouse utilizes light for tracking movement?

<p>Optical mouse (C)</p> Signup and view all the answers

What distinguishes a stylus from a traditional pen?

<p>A stylus is specifically designed for electronic screens (B)</p> Signup and view all the answers

What technology do digital writing systems use to capture handwritten input?

<p>Special paper with a grid of dots (A)</p> Signup and view all the answers

Which of the following devices is used primarily for signature capture?

<p>Signature capture device (C)</p> Signup and view all the answers

What is a common feature of touch screens?

<p>They can recognize multi-touch inputs (C)</p> Signup and view all the answers

Which of the following is considered a pointing device?

<p>Mouse (D)</p> Signup and view all the answers

Which of the following audio input devices is typically used for voice commands?

<p>A microphone (B)</p> Signup and view all the answers

Which type of printer produces high-quality images and can print photos?

<p>Inkjet printer (C)</p> Signup and view all the answers

What distinguishes a touch pad from a traditional mouse?

<p>Touch pad is controlled by finger movements (B)</p> Signup and view all the answers

What technology is associated with perceptual computing?

<p>3D gestures and facial expressions (D)</p> Signup and view all the answers

What is the primary distinction between wired and wireless displays?

<p>Wireless displays connect using a wireless network connection. (D)</p> Signup and view all the answers

Which type of display technology emits light directly from organic materials?

<p>Organic Light Emitting Diode (OLED) Displays (D)</p> Signup and view all the answers

What is a key advantage of FOLED displays?

<p>They are built on flexible surfaces. (B)</p> Signup and view all the answers

Which display technology is commonly known for working well in direct sunlight?

<p>Interferometric Modulator (IMOD) Displays (B)</p> Signup and view all the answers

What distinguishes e-paper technology from traditional displays?

<p>E-paper uses electronic ink and changes images wirelessly. (A)</p> Signup and view all the answers

Which type of printer strikes an inked ribbon to transfer ink to paper?

<p>Dot Matrix Printer (B)</p> Signup and view all the answers

What feature is characteristic of TOLED displays?

<p>They are built on transparent surfaces. (C)</p> Signup and view all the answers

Which of the following is a characteristic of Plasma Displays?

<p>They are often being replaced by LCDs. (A)</p> Signup and view all the answers

What is the major difference between impact and non-impact printers?

<p>Non-impact printers use liquid ink or toner for printing. (C)</p> Signup and view all the answers

Which display technology uses a combination of filters, prisms, and lenses for 3D effects?

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

Flashcards

Computer Keyboard

An input device used to type characters on a computer.

Wired Keyboard

A keyboard connected to the computer with a wire.

Wireless Keyboard

A keyboard that transmits data wirelessly to the computer.

Pointing Device

A device used to select commands, manipulate objects, and input data on a computer.

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Mouse

A common pointing device that uses a ball or light-based tracking to move a pointer on a computer screen.

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Optical Mouse

A mouse that uses light to track its movement across a surface.

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Stylus

A pen-like device used for input on touchscreens and graphics tablets.

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Touch Screen

A display device that responds to the user's touch input.

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Graphics Tablet

A flat, touch-sensitive tablet used with a stylus for drawing and inputting graphics.

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Scanner

A device that converts physical documents into digital images.

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Digital Camera

A device that captures and stores images digitally.

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Audio Input Device

A device that allows input of sound and audio data to a computer.

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Display Device

A device that shows visual information to the user, such as text and graphics.

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Printer

A device that produces a hard copy of digital information.

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Audio Output Device

A device that produces sound from a computer.

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Digital Video Camera

A device that records and stores video digitally, such as digital camcorders and webcams.

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Voice Input

Using spoken words to input data into a computer using a microphone or headset.

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Audio Input

The process of entering audio data into a computer, converting sounds into digital form.

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OMR

Optical Mark Recognition. A technology used to read filled-in bubbles or marks.

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Music input systems

Systems used to make music and recordings and insert them into a computer. Existing or new music.

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Display Device

A device that visually presents output on a screen, like a monitor or screen.

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Color vs. Monochrome Displays

Displays can show colors or only black and white.

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CRT vs. Flat-Panel Displays

CRT displays are bulky and older, flat-panels are smaller and use less energy.

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Screen Resolution

The number of pixels on a screen; more pixels = higher detail.

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Video Adapter

A component that controls a computer's graphics capabilities.

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Display Device Characteristics

Features of a display device (like Color, CRT, Size).

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Display device size

Measured diagonally, from corner to corner.

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Display Interfaces

Connections between a computer and its display, like VGA,DVI,HDMI.

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Optical Mouse

A mouse using light to track movements, instead of a ball.

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Handwriting Recognition

Computer inputting text from graphical images of handwritten text.

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Trackball

An input device that resembles an upside-down mouse with a ball on top.

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Augmented Reality

Overlays computer-generated images over real-time images, often on smartphones.

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Scanners

Input devices converting printed text and graphics to digital format.

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Optical Resolution

A measure of scanner image quality, expressed in dots per inch (dpi).

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Barcode Readers

Input devices reading machine-readable codes (barcodes).

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RFID

Radio Frequency Identification; uses tags with chips to transmit data wirelessly.

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Optical Mark Readers (OMRs)

Input devices reading data from special forms for scoring/tallying.

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Optical Character Recognition (OCR)

Computer converting scanned text to editable text format.

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Magnetic Ink Character Recognition (MICR)

Used mainly for banking, reading special magnetic characters on checks.

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Biometric Readers

Input devices using unique physical characteristics like fingerprints or voices.

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Digital Cameras

Capture images and videos digitally, often integrated into mobile devices.

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Mobile Deposits

Remote check deposit capturing using a smartphone app.

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Source Data Automation

Directly capturing data from source documents, increasing accuracy and saving time.

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Wireless Displays

Displays connected to a system using a wireless network connection (like Wi-Fi or Bluetooth).

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2D Displays

Displays that show images in two dimensions, like a flat picture.

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3D Displays

Displays that create a three-dimensional effect, often using filters or multiple lenses.

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Wearable Displays

Displays built into glasses, projecting images from a mobile device.

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LCDs

Liquid Crystal Displays that use liquid crystals between sheets of glass.

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LED Displays

Light Emitting Diode Displays, often used to backlight LCD panels.

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OLED Displays

Organic Light Emitting Diode Displays that emit light when current is applied.

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E-Paper

Displays using electronic ink, easily read in sunlight and only uses power to change images.

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Projectors

Devices that display computer output onto a wall or screen.

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Impact Printers

Use a mechanical hammer to print on paper.

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Print Resolution

The number of dots per inch (dpi) used to print an image. Higher dpi means higher quality.

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Print Speed

The rate at which a printer produces printed pages, measured in pages per minute (ppm).

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Ink-Jet Printer

A printer that creates images by spraying tiny ink droplets onto paper.

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Laser Printer

A printer which uses toner powder and a process much like a photocopier to print.

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Personal Printer

A printer that is connected to only one computer.

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Network Printer

A printer connected to a network, enabling sharing with multiple computers.

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Multifunction Printer

A printer that combines multiple functionalities, such as printing, copying, scanning, and faxing.

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Audio Output Device

A device that produces sound from a computer, including things like speakers and headphones.

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Study Notes

IT Essentials Lecture Notes

  • The lecture covers the most common input devices.
  • It discusses hardware designed to capture electronic data.
  • Audio input is covered, including types of display devices and how they function.
  • Types of printers and functions are also discussed.
  • Audio output devices are included in the lecture.
  • Keyboards are input devices used to enter characters.
  • Keyboards can be wired or wireless.
  • Keyboards typically contain standard alphanumeric keys, numeric keypads, function keys, delete, backspace, control, alternate and arrow directional keys, and special keys.
  • Mobile devices often use slide-out keyboards, on screen keyboards, and keyboard docks.
  • Pointing devices are used to select and manipulate objects, input data, and issue commands.
  • Common pointing devices include mice, pens/styluses, and touch input devices.
  • Mice are pointing devices that slide along a flat surface to move a pointer on the screen.
  • Older mice used a ball, optical or laser mice track with light, and touch mice support two-dimensional gestures.
  • Styluses are pen-like devices used to draw or write electronically on screens.
  • Pens/styluses are also used for photography, graphics design, animation, industrial design, document processing, and healthcare applications.
  • Pens/styluses are used to navigate documents, and issue commands.
  • Scanners convert printed text and graphics to a digital format as a single image.
  • Flatbed, portable, 3D, receipt and business card scanners are types of scanners.
  • Scanner quality is measured by optical resolution in dots per inch (dpi).
  • Readers such as barcode readers use machine-readable codes to input data as a set of bars.
  • Common types include UPC, ISBN, DataBar, and QR codes.
  • Radio Frequency Identification (RFID) readers use technology to store and transmit data within RFID tags.
  • Tags can be attached to objects and only need to be within range of the reader.
  • RFID readers are used in applications including tracking inventory and assets, electronic toll collection, tracking patients in hospitals, ticketing applications, and speeding up ID processes.
  • Optical Mark Readers (OMRs) input data from special forms to score or tally exams, questionnaires, and ballots.
  • Optical Character Recognition (OCR) devices recognize scanned text characters and convert them to editable text.
  • Magnetic Ink Character Recognition (MICR) readers are used for processing checks.
  • Biometric readers use fingerprint or voice input.
  • They can be stand-alone or built into hardware.
  • Biometric readers are often used for access control, electronic payment authorization, and secure website login.
  • Mobile remote deposit capture transmits check information using a smartphone app.
  • Digital cameras take and record images as digital images.
  • Digital cameras, can be either still or video cameras.
  • Still cameras are available in a wide range of devices, typically using flash memory for storage.
  • Video cameras are used in surveillance, video conferencing, webinars, and face recognition systems.
  • Audio input involves putting spoken words into digital form.
  • Voice input can be used for podcasts, VoIP (Voice over IP) systems, and speech recognition systems.
  • Devices for music input include existing music from CDs or web downloads, original music using microphones, keyboard controllers, and guitar controllers.
  • Display devices present output visually on screen.
  • Displays can be monitors, for desktop computers, or built into a variety of other devices.
  • Displays range from notebook and mobile computers and other portable devices to handheld gaming and home entertainment devices, kitchen appliances, digital photo frames, and e-book readers.
  • Color displays use pixels and color displays, and a variety of technologies.
  • Size and resolution of displays impact their usage.
  • Display devices can be wired or wireless such as tablets.
  • Wearable displays project images from a mobile device to a screen built into glasses.
  • Display technologies include liquid crystal displays (LCDs), light-emitting diode (LED) displays, and organic light-emitting diode (OLED) displays.
  • Special types of OLEDs include flexible OLED (FOLED), transparent OLED (TOLED), phosphorescent OLED (PHOLED).
  • Interferometric Modulator (IMOD) displays use external light for bright and clear displays.
  • Plasma Displays use layers of gas between glass plates but are no longer used as much.
  • E-paper displays are used in e-readers, making them easier to read, especially in sunlight, and uses electronic ink, and can be monochrome or color.
  • Data and multimedia projectors display computer output on walls or projection screens.
  • They are found in classrooms and conference rooms and can be wireless or integrated into devices.
  • Pico projectors are small, connecting mobile and portable devices.
  • Hologram and 3D projectors display 3D images viewed with 3D glasses.
  • Printing technology includes impact printers such as dot matrix printers, and non-impact printers which use liquid ink or toner to produce higher quality output.
  • Types of printers include laser and ink-jet printers.
  • Special purpose printers include barcode, label, and postage printers; photo printers; portable and integrated printers; wide-format ink-jet printers; and 3D printers.
  • Audio output includes voice, music, and other sounds from computer speakers, headphones, ear buds.

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Related Documents

IT Essentials Lecture 2 & 3 PDF

Description

This quiz focuses on the various input and output devices discussed in IT Essentials. It covers categories such as keyboards, pointing devices (mice and styluses), and audio input/output devices. Additionally, it touches on mobile device keyboards and their functionalities.

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