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?

Flatbed scanners Signup and view all the answers

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

Audio Input Signup and view all the answers

What is the purpose of measuring print resolution in dpi?

To evaluate the quality of the printed output Signup and view all the answers

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

Laser printers Signup and view all the answers

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

USB connection Signup and view all the answers

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

Spray droplets of ink onto paper Signup and view all the answers

What is a common application of special purpose printers?

Producing barcodes and labels Signup and view all the answers

How does print speed vary among printers?

PPM can range from about 15 to 65, depending on the printer Signup and view all the answers

What is the typical print resolution range for laser printers?

600 to 2,400 dpi Signup and view all the answers

Which of the following statements is true about multifunction printers?

They can perform multiple functions like copying and scanning Signup and view all the answers

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

They occupy less desk space. Signup and view all the answers

What does screen resolution refer to in display devices?

The number of pixels used, determining information displayed. Signup and view all the answers

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

USB-C Signup and view all the answers

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

Display Screen Signup and view all the answers

Which statement about color displays is true?

Most modern displays are color displays. Signup and view all the answers

What determines the aspect ratio of a display device?

The physical dimensions of the screen. Signup and view all the answers

Which of the following best describes a CRT display?

It is large and bulky compared to modern displays. Signup and view all the answers

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

Screen resolution. Signup and view all the answers

What is the primary function of an optical mouse?

To track movements using a light source. Signup and view all the answers

With handwriting recognition, what happens to the text input?

It gets saved as a digital image. Signup and view all the answers

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

A trackball. Signup and view all the answers

What is the benefit of source data automation?

It captures data directly from source documents. Signup and view all the answers

What defines the quality of scanned images?

The optical resolution in dpi. Signup and view all the answers

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

Universal Product Code (UPC). Signup and view all the answers

What technology allows RFID tags to communicate data?

Radio frequencies. Signup and view all the answers

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

Magnetic Ink Character Recognition (MICR) Reader. Signup and view all the answers

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

To convert scanned text characters into editable text. Signup and view all the answers

What is a common application of biometric readers?

Access control for secure locations. Signup and view all the answers

How do digital cameras primarily store images?

Using flash memory. Signup and view all the answers

Which of the following is NOT a type of scanner?

Liquid scanner. Signup and view all the answers

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

Advanced imaging technology. Signup and view all the answers

What is the main function of a computer keyboard?

To enter characters at the cursor location Signup and view all the answers

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

Wireless mechanical keyboard Signup and view all the answers

What is the function of a pointing device?

To select and manipulate objects Signup and view all the answers

Which type of mouse utilizes light for tracking movement?

Optical mouse Signup and view all the answers

What distinguishes a stylus from a traditional pen?

A stylus is specifically designed for electronic screens Signup and view all the answers

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

Special paper with a grid of dots Signup and view all the answers

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

Signature capture device Signup and view all the answers

What is a common feature of touch screens?

They can recognize multi-touch inputs Signup and view all the answers

Which of the following is considered a pointing device?

Mouse Signup and view all the answers

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

A microphone Signup and view all the answers

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

Inkjet printer Signup and view all the answers

What distinguishes a touch pad from a traditional mouse?

Touch pad is controlled by finger movements Signup and view all the answers

What technology is associated with perceptual computing?

3D gestures and facial expressions Signup and view all the answers

What is the primary distinction between wired and wireless displays?

Wireless displays connect using a wireless network connection. Signup and view all the answers

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

Organic Light Emitting Diode (OLED) Displays Signup and view all the answers

What is a key advantage of FOLED displays?

They are built on flexible surfaces. Signup and view all the answers

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

Interferometric Modulator (IMOD) Displays Signup and view all the answers

What distinguishes e-paper technology from traditional displays?

E-paper uses electronic ink and changes images wirelessly. Signup and view all the answers

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

Dot Matrix Printer Signup and view all the answers

What feature is characteristic of TOLED displays?

They are built on transparent surfaces. Signup and view all the answers

Which of the following is a characteristic of Plasma Displays?

They are often being replaced by LCDs. Signup and view all the answers

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

Non-impact printers use liquid ink or toner for printing. Signup and view all the answers

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

3D Displays Signup and view all the answers

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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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.