Computer output
Which of the following are typical ratios for monitors?
1. 16:9 2. 4:3
Also known addictive manufacturing (AM),
3D printing sprays
Also known as additive manufacturing (AM), ____ printing sprays successive layers of material to create an object
3d printing sprays
Inkjet printers are often sold
Below production costs
Select the true statements regarding an LED display
Can be extremely thin Extremely energy efficient Great for well-lit areas
Common printer manufacturer
Canon Lexmark Brother HP
The number of bits of data describing each pixel in a display is referred to as
Color depth
A description of the difference in luminescence of a display's white pixels compared to the black pixels is called
Contrast ratio
Which of the following statement are true?
DVDs use longer lasers DVDs and blu raus are considered optical media
The distance between two adjacent sub-pixels on a display is referred to as
Dot pitch
The art and science of creating output that provides information in the most useful manner is called
Ergonomics
The study of human factors related to the things people use is called
Ergonomics
Peripherals
Example of peripherals Printer Keyboard
Which acronym refers to a type of computer monitor?
LCD
Which statement refer to display's contrast ratio?
Luminescence of white pixels compared to black pixels In general, the higher the contrast ratio, the better the image quality Describe the difference in brightness
The video screen that comes with a computer is referred to as its
Monitor
Which are true regarding laser printers?
Much faster than inkjet printers when making multiple copries User toner
Which of the following statements best defines the term "frame rate"?
Number of times per second a frame in a video is advanced
Though currently expensive, curbed and paper-thin displays are possible using
OLED technology
Using reflective material to store data that can be read using a laser is media storage
Optical
OLED stands for
Organic Light Emitting Diode
The smallest controllable element of an image is called an
Pixel
This type of display creates images with pixels made of red, green, and blue cells with ionized gas
Plasma
A type of printer that is used to print large graphic images such as architectural drawings
Plotter
Select the factors that should be considered when purchasing external speakers for a digital device
Portability Price Sound quality
An output device that uses light to display video or image output on a surface is called a
Projector
The term that describes how fast each pixel in a display is updated is
Refresh rate
To convert sound waves into digital signals, each sound wave is
Sampled
The diagonal measure of the visible display is known as
Screen size
Increased data transfer means you should use a
Shorter USB cord
Which of the following are true regarding high-definition displays
Typically have 1080 horizontal lines of pixels Typically have aspect ratios of 16:9
This is a
USB cord
Which of the following refers to ultra-high-definition television displays?
UlteraHD 4k UHD 8kUDH
Television displayed with resolutions of at least 3840 x 2160 pixels are referred to as
Ultra HD
The number of pixels in a display is called the display's
resolution
Select the characteristic of OLED technology
Capable of creating curved and extremely thing displays Use red, green, and blue LEDs to create each pixel Currently more expensive to productive than LCD screens
Number of times per second a frame in a video is advanced is the definition of
Frame rate
High definition displays typically have ______ horizontal lines of pixels
1080
Which of the following are examples of output?
1.A YouTube video displayed on a screen 2.An anti lock brake system applying brakes
Which are true regarding color depth?
1.A measure of accuracy of the color each pixel 2.Specifically, the number of bits of data describing each pixel in a display 3.Also known as "bit depth"
Which are true regarding a display's refresh rate?
1.Describes how fast each pixel in a display is updated 2.The higher the refresh rate, the smoother the video 3.Videos play best with refresh rates at even multiples of the frame rate
1.Input Device 2.Output Device
1.Keyboard, microphone, mouse, game controller 2.Projector, printer, speaker, monitor
List the steps taken as a laser printer prints an image
1.Laser removes electrons from the drum 2.Paper is fed between the drum and the toner 3.Charged toner is attracted to the drum 4.Toner is melted onto the paper
Which are true regarding a screen's resolution?
1.Shown as width x height in pixels 2.Equals the number of pixels in a display 3.A measure of image quality
Select the characteristics of audio output
Digital devices uses digital-to-analog converters Converts electrical impulses into air movement
By efficiently turning electrons into photons
LED
Toner is drawn to a drum when creating hardcopy using a
Laser printer
Match the following regarding printers
Laser printer: High cost; Uses cartridges Inkjet printer: Low cost; Uses ink
OLED Plasma Liquid Crystal Display
Relatively expensive technology, but makes extremely thin, curved and flexible displays possible Uses microscopic tubes of ionized gas to create displays Commonly used for smartphones and tablets displays
When you get a receipt from a store or a restaurant it's probably printed on
Thermal paper
A port that allows the transfer of high quality video and audio signals and is the standard for television input, is called a
Hdmi port
Because of their slim profiles, most smartphone speakers produce tinny music. Because of this, nmany users purchase earbuds or
Headphones
Because of their minimal power requirements, most laptops, smartphones, and tablets computers use a
LCD display
Input Output
Putting a video from your phone onto your computer, recording a song using MIDI, entering text in a word processing program Displaying a youtube video on a TV screen, playing a song from spotify, a spreadsheet printout
1920 vertical lines of pixels and 1080 horizontal lines of pixels defines a
High definition display