Module 2: Computer Input & Output

What are High-Definition Television Monitors?

- television Monitors with 1080 horizontal lines of pixels - Also known as Full HD or FHD - Has an aspect ratio of 16:9 (widescreen) - Resolution of 1920 x 1080 pixels (2.1 megapixels)

Place the following steps taken by a laser printer, placing the first step at the top. Instructions 1.) Laser "removes" electrons from the drum. 2.) The charged toner is attracted to the drum. 3.) Paper is fed between the drum and the toner. 4.) Laser "removes" electrons from the drum.

1.) Laser "removes" electrons from the drum. 2.) Paper is fed between the drum and the toner. 3.) The charged toner is attracted to the drum. 4.) The toner is melted onto paper.

Which 2 of the following are examples of output? A YouTube video is displayed on a screen. An anti-lock brake system applies brakes. Writing a text message. Bringing a photo into your computer (from a phone, for example).

A YouTube video is displayed on a screen. An anti-lock brake system applies brakes.

Which of the following companies popularized the use of the mouse for personal computers? Which of the following companies popularized the use of the mouse for personal computers?

Apple

Which 3 of the following are the characteristics of OLED technology? Currently more expensive to produce than liquid crystal display (LCD) screens. Generate a significant amount of heat. Use red, green, and blue light-emitting diodes (LEDs) to create each pixel. Capable of creating curved and extremely thin displays.

Currently more expensive to produce than liquid crystal display (LCD) screens. Use red, green, and blue light-emitting diodes (LEDs) to create each pixel. Capable of creating curved and extremely thin displays.

Which three statements refer to a display's contrast ratio? Describes the difference in brightness In general, the higher the contrast ratio, the better the image quality Luminance of white pixels compared to black pixels Describes the number of pixels in a display

Describes the difference in brightness In general, the higher the contrast ratio, the better the image quality Luminance of white pixels compared to black pixels

Print quality (resolution) is measured in ___.

Dots per Inch (DPI)

Developing output that provides information in the most useful manner is called __.

Ergonomics

The technology that uses the reflection of a laser of the graphite left by a #2 pencil to determine if a bubble has been filled in is called

Optical Mark Recognition

Devices such as modern check-out machines in stores are called ________ machines.

Point of Sale

When your smartphone suggests the next word in your text message, it is using _________.

Predictive Text Technology

RFID stands for?

Radio Frequency Identification.

The term that describes how fast each pixel in a display is updated is:

Refresh Rate

Which three of the following statements are true regarding a screen's resolution? Equals the diagonal length of the screen Equals the number of pixels in a display A measure of image quality Shown as width x height in pixels

Equals the number of pixels in a display A measure of image quality Shown as width x height in pixels

Select the reasons to use an alternative touchpad or stylus pad. Alternative and stylus pads are less expensive than touchpads built-in into a laptop computer. Large multitouch-touchpads provide significant control advantages over a mouse. Artists and graphic designers often like specialized stylus touchpads. Some users prefer a touchpad over a mouse or trackball.

Large multitouch-touchpads provide significant control advantages over a mouse. Artists and graphic designers often like specialized stylus touchpads. Some users prefer a touchpad over a mouse or trackball.

Technology sometimes used to create prototype models for casting is ___.

3D Technology

A major printer manufacturer is ___.

Canon

Which two of the following are the characteristics of audio output? Most smartphones create excellent low-frequency tones An important part of all desktop computers Converts electrical impulses into air movement Digital devices use digital-to-analog converters

Converts electrical impulses into air movement Digital devices use digital-to-analog converters

Which two of the following statements are true? DVDs and Blu-rays are considered optical media. Most DVD players can also play Blu-rays. DVDs use longer (red spectrum) lasers. Blu-rays used magnetic particles to store data.

DVDs and Blu-rays are considered optical media. DVDs use longer (red spectrum) lasers.

This type of analysis or walking stride identification is valuable because it can be used at night or through walls with infrared cameras or even with satellite imagery.

Gait Analysis

Microelectromechanical system (MEMS) chips are used in which of the following? Hearing aids Speakers Poker chips Smartphones

Hearing Aids Smartphones

Which of the following input devices are often found at a point-of-sale station? Keypad Receipt printer UPC scanning wand Bar code or universal product code (UPC) reader

Keypad UPC scanning wand Bar code or universal product code (UPC) reader

By efficiently turning electrons into photons ___.

LED displays provide very bright screens with very little energy.

Which acronym refers to a type of computer monitor?

Liquid Crystal Display (LCD)

Devices such as modern check-out machines in stores are called ___________.

NFC technology

What is a short range wireless technology used for data transfer and electronic payments?

Near Field Communication (NFC)

Though currently expensive, curved and paper-thin displays are possible using ___.

OLED Technology

Which 3 of the following are used to take fingerprints? Optical (takes a photo of the fingerprint) Microwave (uses microwaves to heat fingertips and detect and measure ridges and whorls) . Ultra-sonic (uses sound waves to detect ridges and whorls) Capacitance (uses electron movement, similar to a touchscreen or touchpad)

Optical (takes a photo of the fingerprint) . Ultra-sonic (uses sound waves to detect ridges and whorls) Capacitance (uses electron movement, similar to a touchscreen or touchpad)

In photography, there are two ways to focus on distant objects:

Optical Zoom Digital Zoom

Items that can be connected to a digital device are referred to as:

Peripherals

A type of printer that is used to print large graphic images such as architectural drawings by mechanically moving a pen over a large sheet of paper is known as a ________.

Plotter

Which of the following technologies are used by facial recognition software? Skin texture measuring 3D mapping Feature charting Capacitance analysis

Skin texture measuring 3D mapping Feature charting

Which three of the following are true regarding a display's refresh rate? The higher the refresh rate, the smoother the video. Describes how fast each pixel in a display is updated. Describes the number of times per second a frame is advanced in a video. Videos play best with refresh rates at even multiples of the frame rate.

The higher the refresh rate, the smoother the video. Describes how fast each pixel in a display is updated. Videos play best with refresh rates at even multiples of the frame rate.

Television displays with resolutions of at least 3840 × 2160 pixels are referred to as:

UltraHD

What is the dynamic method of signature recognition?

Uses a stylus and touchpad; maps signature; measures pressure, pen angle. pen up/down, speed, and so on.

What is the static method of signature recognition?

Written signature is scanned and mapped

The technology that allows any text, even handwritten scrawls, to be digitized is known as optical ___ recognition.

character

Magnetic Ink Recognition (MICR) is a technology that is most commonly seen on ________

checks.

A description of the difference in the luminance of a display's white pixels compared to the black pixels is called ___.

contrast ratio

A description of the difference in the luminance of a display's white pixels compared to the black pixels is called _______.

contrast ratio.

The diagonal measure of the visible display is known as ___.

screen size.

Which of the following provides short-distance wireless communication between electronic devices using extremely low-power radio signals.

Bluetooth

Many hands-free devices and other mainstream computer input tools have resulted from the creation of _____.

Adaptive Use Technologies

A device that turns hardcopy, such as a paper document, into a digital format that can be viewed or manipulated on a computer is an ________

optical scanner.

The smallest controllable element of an image is called a(n)

pixel.

With optical zoom, resolution ______.

remains the same.

The number of pixels in a display is called the display's ___.

resolution.

To convert sound waves into digital signals, each sound wave is __.

sampled.