CH. 5 Computer Output
LCD
(liquid crystal display refers to a type of monitor display - may have slow refresh rate because in relies on molecular movement
Laser printer
- uses toner cartridges - relatively high initial cost
also know as additive manufacturing (AM) ____ printing sprays sucessive layers of material to create an object
3D
The distance between two adjacent sub-pixels on a display is referred to as:
Dot pitch
Printer manufactures often advertise how fast their printers are by using the acronym:
PPM
Increase data transfer means you should use a:
SHORTER USB cord
When you hear music, read a printout, or view a video, you are using a:
computer's output
the number of pixels in display is called the:
display's resolution
using reflective material to store data that can be read using a laser is:
optical media storage
Devices such as speakers, printers, and external keyboards are examples of:
peripherals
CPU
(central processing unit) refers to a computer's processor
Aspect ratio notes
- the width of a screen compared to the height of a screen - described as the two numbers seperated by a colon for example: -traditional television or computer monitor= 4:3 -HDTV= 16:9 -Classic 35mm camera film= 3:2
When you get a reciept from a store or a resturant, it's probably printed on:
- thermal paper
HD displays
- typically have 1,080 horizontal lines of pixels -typically have aspects ratios of 16:9
because of their minimal power requirements, most laptops, smartphones, and tablet computers use a(n):
LCD display
Television display with resolutions of at least 3840 x 2160 pixels are referred to as:
UltraHD
ROM
(read-only memory) refers to a type of data storage.
Which of the following are typical aspect ratios for monitors?
- 4:3 - 16:9
Which colors make up typical monitor's pixels?
- Blue - Red - Green
following are true:
- DVDs use longer (red spectrum) lasers - DVDs and Blu-rays are considered optical media
acronyms that describe a type of computer monitor:
- LED -LCD
How a laser printer prints an image
- Laser "removes" electrons from the drum - paper is fed between the drum and the toner - charged toner is attracted to the drum - toner melled onto paper
common printer manufacturers
- Lexmark - Canon - HP - Brother
inkjet printer
- Uses ink cartridges to print - relatively low initial cost
Output
- a spreadsheet printout - playing a song from Spotify - displaying a Youtube video on a screen
LED displays
- extremely energy efficient - great for well- lit areas - can be extremely thin
Dot pitch
- the closer the spacing (the smaller the dot pitch) the sharper the image - a description of the quality of a minitor or television screen - the distance between two adjoining sub-pixels in a display.
The number of bits of data describing each pixel in a display is referred to as:
color depth
the accuracy of a digital recording is determined by the:
sampling rate
the diagonal measure of the visible display is know as:
screen size
characteristics of a plotter:
- prints large graphic drawings - mechanically moves a pen over a large sheet of paper
Input
- recording a song using MIDI - Putting a video from your phone onto your computer - entering text in a word processing program
Print quality (resolution) is measured in:
- dots per inch (DPI)
Input Device
- keyboard - mouse - game controller - microphone
OLED
Organic Light Emitting Diode' - has the best possible contrast ratio
The width of a screen compared to the height of a screen is referred to as:
aspect ratio
using cells of ionized gas to create images, ______ displays are actually becoming less popular
plasma
Contrast ratio
a description of the difference in the luminescence of a display's white pixels compared to the black pixels
Output Device
- speaker - projector - monitor - printer
Thermal printing
- paper turns black when heated - commonly used for printing receipts
factors to consider when buying a speaker
- price - portability - sound quality
Printer manufactures advertise the quality of their products by stating how many__________ they produce.
DPI
Which of the following statements best defines the term "frame rate"?
Number of times per second a frame in a video is advanced.
the term that describes how fast each pixel in a display is updated is:
refresh rate