Connect Module 2 Quiz

Game Controllers

provide an interface that optimizes a users ability to interact with a specific gaming platform- specific input devices

monitor pixel colors

red, green, and blue

high definition TVs (Full HD)

television monitors with 1,080 horizontal lines of pixels, aspect radio of 16:9, resolution of 1920 x 1080 pixels

color depth

"bit depth", a measure of the accuracy of the color of each pixel, number of bits of data describing each pixel of a display ex: iphone 7 plus- 24 bits

Resolution

# of pixels in the cameras sensor

HD Display

1,920 vertical lines of pixels and 1,080 horizontal lines

LCD standard

120 Hz

cut

CTRL + X

common print manufacturers

HP, Lexmark, Brother, Canon

smartboard

a combination input and output device, sometimes used in classrooms, which allows users to interact with large computer displays

output example

a spreadsheet printout, playing a song from spotify, and displaying a youtube video on a TV screen

passive tags

absorb energy while being scanned

3D Printing

also known as additive manufacturing (AM), sprays successive layers of material to create an object

peripheral

an input, output, or storage device connected to a computer, can be located inside or outside the device, can be connected via the wired and wireless means ex: mouse, printer, keyboard, monitor

command + C

copy

trait qualities for biometic recognition

everyone must have the trait, the trait must not change over time, it must be measurably different with each person

smartphone cameras

focus incoming light using active pixels, front + rear facing cameras, video capacity, LED flash, stabilization, and panoramic view capacity; very few come with optical zoom (want a slim phone)

voice recognition technologies

frequency, pitch, speech rhythms- charted and compared to existing records

Adaptive Use Technology

hands-free devices and other mainstream computer input tools, now commonplace tools on smartphones

optical zoom

increases distance between lens and camera sensor- doesnt sacrifice resolution

command + I

italicize

USB Cord

maximum length depends on amount of data transfer, the more data being transmitted, the shorter the cord

projector

output devices that uses light to display video or image output on a surface (often a screen)

thermal printers

paper turns black when heated, less expensive than toner + ink, commonly used for receipts + ATMs

Command + V

paste

touchpad

pointing device that takes up very little space and is ideal for laptops; track finger movement, electron shift

plotter

printer used to print large graphic images by mechanically moving a pen over a large sheet of paper

bluetooth

provides short distance wireless communication between electronic devices using extremely low power radio signals

printers

recreate a computer image onto paper and other substrate, most use ink, toner, or heat-sensitive paper; resolution described as dots per inch (DPI), printer speed described in pages per minute (PPM)

ergonomic keyboard

reduce repetitive stress injuries such as carpel tunnel syndrome

sampling rate

sound is analog- has wavelength and frequency (volume and pitch), computers can only process digital data, convert sound into a digital signal, more samples= higher sampling rate= more accurate sound recording

output devices

speaker, projector, printer, monitor

bluetooth devices

speakers, headphones, sports equipment, health monitors, cameras, car audio, etc;

pages per minute (PPM)

standard measure of a printers speed

optical sensor

takes photo of your fingerprint

LCD

type of monitor display, may have a relative slow refresh rate since it relies on molecular movements

command + z

undo last action

dynamic signature recognition

uses a stylus and touchpad- maps signatures, measure pressure, pen angle, pen up/down, speed, etc

video conferencing

uses cameras, microphones, displays, speakers and software, allows users to both see and hear each other; used by families, professionals, and gamers ex: skype, facetime, hangouts

inkjet printer

uses ink cartridges, relatively low initial cost

ultrasonic sensor

uses sound waves to detect fingerprint patterns

near field communication (NFC)

wireless technology with a short transmission range; used in smartphones, tablets, and appliances, for data transfer and smartcard payments (Apple Pay)

select all

CTRL + A

save

CTRL + S

paste

CTRL + V

projection laser keyboard

any flat surface is your keyboard

output

anything created with a computer ex: displayed on devices, processed data, audio sounds, videos

ultra HD

aspect ratio of 16:9, resolution of at least 3840 pixels x 2160 pixels, 8k UHD is 7680 pixels x 4320 pixels

Webcam

camera that takes photos or streams video into a computer or over the internet; on nearly all laptops and smartphones, allows video-teleconferencing and Skype, can be hacked

fingerprint scanners

capacitance sensor, optical sensor, and ultrasonic sensor

plasma

creates images using cells of ionized red, blue, and green gas

digital zoom

crops and enlarges, image loses resolution

dot pitch

description of the quality of monitor or television screen, distance between two sub-pixels on a display, the closer the spacing, the higher the image resolution (sharper image)

High resolution

desired for enlargements, cropping, and resizing

barcode reader

device commonly used for checkout in stores, measure the reflection of a laser beam

scanner

device that allows you to take a paper document and import it into your computer

contrast ratio

differences in brightness, luminance of white pixels compared to black pixels; the higher the ratio the better the image quality

optical character recognition

digitizes handwritten information; character shape, prior entries frequency of usage

Superzoom

ease of use with high optical zoom capability

Point and Shoot

ease of use with some optical zoom capability

input example

entering text in a word processing program, putting a video from your phone onto your computer, recording a song using MIDI

lower resolution

handy for online sharing and storing large number of photos

waterproof roll-up keyboards

handy for stuffing into your backpack

Organic Light Emitting Diode (OLED)

has the best possible contrast rate, efficiently turn electrons into photons (light), displays can provide very bright screens with very little energy, more expensive (curved and thin)

active tags

have batteries and transmit data

DSLR (Mirrorless)

high resolution with interchangeable lens capacity, 35mm sensor arrays

refresh rate

how fast each pixel is updated; the higher the refresh rate, the smoother the video, measured in Hz, videos play best with rates at even multiples of the frame rate

optical media

includes DVDs + Blue-Rays, data stored using reflective material housed on plastic disk, laser beam "reads" data, DVDs use longer (red spectrum) lasers

stride/gait recognition

individuals can be identified by their stride using technology called biometic gait analysis- can be used at night or through walls with lR cameras or satellites

iris scanning

involves taking a photo of the colored part of the eye and comparing it to a database of images

How a laser printer works

laser "removes" electrons from drum, paper is fed between the drum + toner, charged toner is attracted to drum, toner is melted onto paper

smartphone input devices

microphone, touchpad, motion sensors, cameras, multiple buttons and switches, microUSB port, power port

point of sale devices

modern check-out machines, bar code reader, numbered keypad, scanning wand, credit card reader, touchscreen, MICR, scale, etc

capacitance sensor

most common (iphone), like a laptop touchpad, fingerprint patterns sensed by electron movement

QWERTY keyboard

most common computer keyboard, namd for the first 6 letters on the top row

Laser Printers

most popular printers for offices, use relatively inexpensive toner, great for multiple copies

input devices

mouse, keyboard, microphone, game controller

resolution

number of pixels in a display

optical mark recognition (OMR)

reflection of a laser determines if bubble has been filled, commonly used in standardized testing, #2 pencil

facial recognition software

technologies include feature charting, 3D mapping, skin texture measuring

magnetic ink recognition (MICR)

technology most commonly seen on checks

MEMS Chip

technology that allows cell phone microphones and hearing aids to be so small- can easily fit on a dime

Active Pixel Sensor

technology used by smartphones to create an image; ex: inexpensive digital cameras, senses light, allows for high speed photos/videos, used in all webcams, smartphones, and most digital cameras

ergonomics

the art and science of creating output that provides information in the most useful manner

frame rate

the number of times per second a frame in a movie or video is advanced; measured in frames per second (FPS) ex: cinema standard- 2.4 frames per second

Musical Instrument Digital Interface (MIDI)

the technology that allows a computer to serve as a sound studio

Liquid Crystal Display (LCD)

uses molecules to block or allow light to pass through filters, electrodes twist molecules so they align w/ a colored pixel filter to determine pixel color + intensity; light is provided by a source behind the layers (most laptops, tablets, and smartphones)

radio frequency identification (RFID)

uses radio waves to transmit data to 2 categories; passive tags and active tags (both are good for tracking inventory)

laser printer

uses toner cartridges, relatively high initial cost

aspect ratio

width of a screen compared to the height ex: 4:3- traditional TV, HD- 26:9

static signature recognition

written signature is scanned and mapped

Conservative refresh rate

60 Hz