Chapter 7 Input and Output

Define the term, drone. Identify some uses of drones.

A drone is a unmanned aerial vehicle that is operated by a remote pilot in command who has their license and is qualified to fly a drone. Drones can be used in a number of operators such as being identified for the military, search and rescue, surveillance, etc.

Define the term, data projector. Differentiate between LCD and DLP projector technology.

A data projector is a device that projects the text and images displaying on a computer or mobile device screen on a larger screen so that an audience can see the image clearly. LCD - Attaches to computer, uses own light source. DLP - Reflects light, stabilizes photos.

Outline steps to secure your privacy when using a device with a webcam.

However, hackers can trick users into installing webcam spyware that disables the activity light with a software hack or by modifying configuration settings. So, even though the activity light is off, the webcam may be capturing video and someone on the internet might be staring back at you.

__ is any data and instructions entered into the memory of a computer.

Input

List guidelines to protect your credit card from scamming devices.

Security experts also recommend stacking several credit cards in an attempt to scramble the signals. Place the cards in your wallet with the magnetic stripe facing inside. RFID-blocking wallets also are manufactured to prevent scanners from obtaining the emitted signals.

Name hardware and devices used for voice and audio input.

Voice Input - Voice Recognition, also called speech recognition is the computer or mobile devices' capability of distinguishing spoken words. Audio Input - Is the process of entering any sound into the computer, such as speech, music, and sound effects.

Explain the criminal and beneficial purposes of keyboard monitoring software.

When used in a positive fashion, employers can measure the efficiency of data entry personnel. This software also can verify that employees are not releasing company secrets, are not viewing personal or inappropriate content on work computers and are not engaging in activities that could subject the company to harassment, hacking, or similar changes.

Differentiate among compact, ergonomic, gaming and wireless keyboards.

Compact - Which is smaller than a standard keyboard and usually does not include the numerical keypad or navigation keys. Ergonomic - Has a design that reduces the chance of repetitive strain injuries (RSIs) of the wrist and hand. Gaming - Designed specifically for users who enjoy playing games on the computer. Wireless - A battery-powered device that transmits data to the computer or mobile device using wireless technology.

Explain the purpose of the GPU. List and describe port types for monitors.

GPU - controls the manipulation and display of graphics on a display device. DVI (Digital Video Interface) Enables signals that transmit to a monitor. HDMI (High Definition Media Interface) Require the use of an adapter when connecting to a standard size HDMI display. A Display port is an alternative to DVI that also supports high definition audio and video.

Explain how an ink-jet printer works, and describe the mechanics of the ink cartridge.

Ink-jet printers produce text and graphics in both black and white and color on a variety of paper types and sizes. These printers normally use individual sheets of paper stored in one or two removable or stationary trays.

List types of assistive technologies for input and output.

Input - Voice Recognition Output - Computer speaks to you, gives information.

Describe types of scanners and reading devices.

Most OCR devices include a small optical scanner for reading characters and sophisticated software to analyze what is read. OMR devices read hand-drawn marks, such as small circles or rectangles. A bar code reader also called a bar code scanner is an optical reader that uses laser beams to read bar codes.

Explain how computers and mobile devices use speakers, such as satellite speakers, to emit sound.

Most personal computers and mobile devices have a small internal speaker that usually emits only low quality sound.

Define the term, output. List types and methods of output.

Output is data that has been processed into a useful form. Recall that computers process data (Input) into information (output). The form of output varies depending on the hardware and software being used and the requirements of the user.

Outline steps for printing from a smartphone or tablet.

1. Access your printer's settings and make sure the printer is connected to your network. 2. Configure the option to set up an email address for receiving print jobs and write down that email address. 3. On your computer or mobile device, send the file you want to print as an attachment to an email message addressed to the email address determined in Step 2. 4. When the printer receives the email message with the file attachment, it will print the file.

List features that are common to most keyboards. Describe how to use a keyboard shortcut.

A keyboard shortcut is one or more keyboard keys that you press to perform an operating system or application-related task. Some keyboard shortcuts are unique to a particular application or operating system. Media control buttons allow you to control a media player program, access the computer's optical disc drive, and adjust speaker volume.

Define the term, pointer. Name objects a pointing device can select.

A pointer is a small symbol on the screen whose location and shape change as a user moves a pointing device. Text, Buttons, Icons, Links, Menu Commands.

Describe the following input devices: touchpad, pointing stick, and trackball.

A touchpad is a small, flat, rectangular pointing device that is sensitive to pressure and motion. Touchpads are found most often on laptops and convertible tablets. A pointing stick is a pressure sensitive pointing device shaped like a pencil eraser positioned between its keys. A trackball is a stationary pointing device with a ball on its top or side. The ball in most trackballs is about the size of a Ping-Pong ball.

Compare the price and quality of laser printers to ink-jet printers.

Depending on the quality, speed, and type of laser printer, the cost ranges from a few hundred to a few thousand dollars fro the home and small office user, and several hundred thousand dollars for the enterprise user.

Differentiate among headphones, earbuds, and headsets.

Headphones - Cover or are placed outside of the ear. Earbuds - Rest inside the ear canal. Headsets - Is a device that functions as both headphones and a microphone.

Explain how resolution affects printer quality.

Printer resolution is measured by the number of dots per inch (dpi) a printer can print. With an ink-jet printer, a dot is a drop of ink. A higher dpi means the print quality is higher because the drops of ink are smaller and more drops fit in an area.

Describe orientation options for printouts. Explain what is needed to print using Bluetooth.

With Bluetooth printing, a computer or other device transmits output to a printer via radio waves. The computer or other device and the printer do not have to be aligned with each other, rather, they need to be within an approximate 30 foot range.

Explain how to interact with a touchscreen.

You just click the buttons on the screen and mess around with it. Play with a touchscreen.

Outline steps involved in using DV technology.

1. Select a DV Camera 2. Record a Video 3. Transfer and Manage Videos 4. Edit a Video 5. Distribute a Video

List uses of RFID technology, and list uses for magstripe readers.

An RFID reader reads information on the tag via radio waves. RFID readers can be handheld devices or mounted in a stationary object, such as a doorway. A magstripe reader short for magnetic stripe card reader, reads that magnetic stripe on the back of credit cards, entertainment cards, bank cards, identification cards, and other similar cards.

A (n) __ code stores information that can correspond to a web address or other content.

QR (Quick Response Code)

Explain what occurs during a video-conference and the technology needed.

A videoconference is a meeting between two or more geographically separated people who use a network or the Internet to transmit audio and video data. To participate in a videoconference using a computer, you need videconference software or access to a videoconference web app, along with a microphone, speakers, and a video camera attached to or built into a computer.

Describe how a bank uses MICR technology.

An MICR reader converts MICR characters into a form the computer can process. The banking industry almost exclusively uses MICR for check processing.

List different mouse types.

Right Button, Wheel Button, Optical Mouse, Thumb buttons, left button, touch mouse.

Explain how hand-writing notes during class could impact your knowledge retention.

A recent study concluded that students who use traditional pen and paper to take notes in class and while studying had better understanding and recall of information. The study concluded that when taking notes on a laptop, students tended to write down the speaker's exact words. taking notes longhand required students to process the information, use their own words, and select what information is important enough to write down.

List guidelines for safely scanning QR codes.

Consumers scan to obtain additional information which may be in the form of a website or may display text for the user to read.

Describe how display quality is determined. Define these terms: resolution, response time, nit, candela, dot pitch, and contrast ratio.

The quality of a display depends primarily on its resolution, response time, brightness, dot pitch and contrast ratio. Resolution is the number of horizontal and vertical pixels in a display. Response Time of a display refers to the time in milliseconds (ms) that it takes to turn a pixel on or off. A nit is a unit of visible light intensity equal to one candela (formerly called candlepower) per square meter. Dot pitch sometimes called pixel pitch is the distance in millimeters between pixels on a display. Contrast ratio describes the difference in light intensity between the brightest white and darkest black that can be produced on a display.

Explain safety issues surrounding hardware radiation.

While the amounts for computers and mobile devices may not be harmful in low doses, some critics argue that constant exposure, such as sitting in an office all day or wearing a Bluetooth headset for several hours at a time, can cause levels of radiation that, over time, may cause cancer or other health concerns. In addition to the computer itself, peripheral devices, such as printers, along with the wireless or cordless methods to connect the devices, emit radiation. Research is conclusive about safe levels and long term risk.

Give examples of data collection devices and describe how they are used.

For example, employees use bar code readers, handheld computers or other mobile devices to collect data wirelessly. Data collection devices and many mobile computers and devices have the capability of wirelessly transmitting data over a network or the Internet.

Describe the technologies used by HDTV. Explain the capabilities of a Smart TV.

HDTV (High Definition Television) is the most advanced form of a digital television, working with digital broadcast signals, transmitting digital sounds, supporting wide screens, and providing high resolutions. A Smart TV is an Internet-enabled HDTV from which you can browse the web, stream video from online media services, listen to Internet radio, communicate with others on online social media, play online games, and more all while watching a television show.

List methods and devices for using pen input. Define the term, digitizer.

With pen input, you touch a stylus or digital pen on a flat surface to write, draw, or make selections. Digitizer - An electronic plastic board that detects and converts movements to a stylus or digital pen into digital signals that are sent to the computer.

Differentiate among LCD, CCFL, LED, TFT, OLED, and AMOLED technologies.

An LCD (Liquid crystal display) sandwiches a liquid compound between two sheets of material that presents sharp, flicker-free images on a screen when illuminated. CCFL (Cold Cathode Fluorescent Lamp)/LED (Light-Emitting Diode) TFT (Thin-Film Transistor) Displays high-quality color that is viewable from all angles. OLED (Organic LED) Do not require a backlight. AMOLED (Active Matrix OLED) Provude different levels of viewing quality.

Define these terms: data, software, and command. Give an example of a user response.

Data - A collection of unprocessed items, including text, numbers, images, audio and video. Instructions that a computer or mobile device processes can be in the form of software (programs and apps), commands, and user responses. Software - A series of related instructions, organized for a common purpose, that tells a computer or mobile device what tasks to perform and how to perform them. When software developers write programs or apps, they usually enter the instructions into the computer or mobile device by using a keyboard, mouse, or other input method. Command - An Instruction that causes a program or app to perform a specific action. Ex Do you want to save the following changes say Yes or No

List steps to connect a laptop to an external display.

1. Verify that your laptop is compatible with the external display. 2. Make sure that you have a cable that can connect from a port on your laptop to a port or cable connected to the external display. If not you may need to purchase an adapter. 3. Verify that your laptop supports a screen resolution that the external display also supports. 4. Use the cable to connect your laptop's video port to the video input for the external display. 5. External displays often have multiple video input port; make sure the external display is configured to display the content from the port to which your laptop is connected. 6. If necessary, configure the laptop to display content on the external display. This often can be done by pressing a key on the keyboard or accessing the operating system's display settings.

Describe the following printer types: photo, all-in-one, 3-D, thermal, mobile, label, plotter, and impact.

Photo - A photo printer is a color printer that produces lab-quality photos. All-In-One - A single device that looks like a printer or a copy machine but provides the functionality of a printer, scanner, copy machine and perhaps a fax machine. 3-D - Uses a process called additive manufacturing to create an object by adding material to a three-dimensional object, one horizontal layer at a time. Thermal - Generates images by pushing electrically heated pins against heat sensitive paper. Mobile - A small, lightweight, battery-powered printer that allows a mobile user to print from a laptop, smartphone, or other mobile device while traveling. Label - A small printer that prints on an adhesive type material that can be placed on a variety of items, such as envelopes, packages, optical disks, photos, and file folders. Plotter - Is a sophisticated printer used to produce high quality drawings, such as blueprints, maps, and circuit diagrams. Impact - Forms characters and graphics on a piece of paper by striking a mechanism against an inked ribbon that physically contacts the paper.

Define the term, motion input. Describe how the entertainment industry, the military, athletics, and the medical field use motion input.

With motion input, sometimes called gesture recognition, users can guide on screen elements using air gestures. Motion sensing game controllers enable a user to guide on screen elements by moving a handheld device through the air. Military users of motion input include training, such as flight simulation or weapon usage. Coaches and sports trainers use motion input to improve athletes' performance and to correct inefficient or injury-causing motions. Using motion input that enhances movements, surgeons also can operate less invasively.

Describe how desktop monitors, laptop and mobile device screens, smartphone, wearable devices, portable media players, digital cameras, kiosks, and navigation system use touch input.

DM - These touch-enabled monitors and screens allow users to interact with the operating system without a keyboard or pointing device. Smartphone - The gestures you might perform on a smartphone that supports touch input include tapping to run an app, sliding or swiping to scroll, and pinching and stretching to zoom. Wearable devices - The gestures you might perform on a wearable device include tapping to make a selection, and sliding or swiping to scroll through the various screens. Portable Media Players - Users slide and swipe to browse their music libraries on their portable media players and then tap to select the song they want to play. Digital Cameras - Browse through photos, zooming in and out. Cropping Kiosks - Because Kiosks are designed to help you perform a specific function as quickly as possible, touch input is ideal for their user-friendly interfaces. Navigation System - Can perform actions such as finding a destination, zooming in and out of map.

Define the term, display and monitor. Describe different types of monitors.

Display - Is an output device that visually conveys text, graphics and video information. Sometimes called soft copy, information on a display exists electronically and appears for a temporary period. A monitor is a display that is packaged as a separate peripheral device. Some monitors have a tilt and swivel base which allows you to adjust the angle of the screen to minimize neck strain and reduce glare from overhead lighting. Adjustable Monitor

Describe uses of interactive whiteboards and force-feedback game controllers. Define the term, tactile output.

Interactive Whiteboard - Displays image connected to computer screen via projector. Force Feedback - Sends resistance to the device in response to actions of the user. Tactile Output - Provides the user with a physical response from the device. For an example, users may sense a bumping feeling on their hand while scrolling through a smartphone's contact list.