More I/O Info 1150
How many RGB colors are possible?
16.7m(Red-256, Green-256, blue-256)
is a flat-panel display or other electronically modulated optical device that uses the light-modulating properties of liquid crystals. Liquid crystals do not emit light directly, instead using a backlight or reflector to produce images in color or monochrome.
A liquid-crystal display (LCD)
Used in computers and other illuminated devices A little different from what we are accustomed Creates colors from adding colors together (Red, Green, Blue) RGB there's no pink
Additive Color
Can include another variable called _____ RGBA or ARGB It is a level of opacity Measured in two ways 0 - 255 0 - 1 1 = fully opaque .5 = halfway transparent 0 = fully transparent
Alpha
Name the mice types
Ball, Track, Optical
introduced in 1981, was IBM's first graphics card and first color display card for the IBM PC. For this reason, it also became that computer's first color computer display standard.
CGA(Color Graphics Adapter)
Using dots of different colors to appear to have additional colors. Used in computer graphics to create the illusion of "color depth" in images with a limited color palette( 4 colors)
Dithering
is an IBM PC computer display standard from 1984 that superseded and exceeded the capabilities of the CGA standard introduced with the original IBM PC, and was itself superseded by the VGA standard in 1987.
EGA(Enhanced Graphics Adapter)
Dithering with just Black and White (2 colors)
Half-toning
_________ is the science of applying tactile sensation to human interaction with computers. This device is one that involves physical contact between the computer and the user, usually through an input/output device, such as a joystick or data gloves, that senses the body's movements.
Haptics
Numbers are often represented in 6 digits Especially in web design(#FF0000)
Hexadeciml
Sometime called Dot matrix Uses impact against a carbon ribbon to print Still used where carbon copy forms are needed. Prints character by character
Impact
Name the four main kinds of printers
Impact Inkjet Laser Plotter
Uses ink spit out of small "jets" Prints pixel by pixel Common inexpensive printers "disposable printers" Probably the most common today
Inkjet
TV-Resolutions: Older standard Every other line is drawn Lower frequency still smooth
Interlaced
Most common type of file format for a picture?
JPEG
Also called a Page printer Prints a whole page at a time Uses an electric charge to attract plastic toner and then uses heat to bind it to the paper
Laser
Laid out in a grid Density measured in PPI (Pixels per Inch) Three colors to make every other color Measurement for Monitor Resolution 1024 x 768 = 1024 pixels wide and 768 pixels high
Monitors
All of the colors that a image file recognizes Palette size decreases => size decreases
Palette
Smallest dot a computer can represent on a screen
Pixel
Big printers Used to use pens to draw on the page Now some use inkjet technology
Plotter
CYMK(C = Cyan Y = Yellow M = Magenta K= Black) is used in what?
Printers
What does RGB stand for?
Red Green Blue
Double characters can be represented with single char FFAABB = FAB FFDDAC ≠ FDAC
Shortened Notation
The practice of concealing messages or information within other nonsecret text or data.
Steganography
Used in traditional arts What is normal color to us. Creates colors from subtracting colors (Red, Yellow, Blue)
Subtractive Color
connector is a three-row 15-pin DE-15 connector. The 15-pin VGA connector was provided on many video cards, computer monitors, laptop computers, projectors, and high definition television sets.
VGA(Video Graphics Array)
Most ______ images carry the file extension _____. They can be almost any size, in color or black and white, and can even support more levels of color than formats like JPEG or PNG. They can even optionally include transparency and color profile information. Still, you don't see them that often. Why? Because most bitmaps are uncompressed, which makes for enormous files. Even when they are compressed, the compression ratio isn't very great, so the files are still quite large.
bitmap .bmp
is a vacuum tube that contains one or more electron guns and a phosphorescent screen, and is used to display images. It modulates, accelerates, and deflects electron beam(s) onto the screen to create the images. This was used in Moniters
cathode ray tube(CRT)
Print quality is measured in _________
dpi (dots per inch)
Name the type of scanners
flatbed, 3d, hand, barcode
TV-Resolutions: What is the i and the p(720p-720i) i=____ , p =______.
interlaced scan, progressive scan
is a light-emitting diode (LED) in which the emissive electroluminescent layer is a film of organic compound that emits light in response to an electric current. ... There are two main families of OLED: those based on small molecules and those employing polymers.
organic light-emitting diode (OLED)
A ___________ device connects to a computer system to add functionality. Examples are a mouse, keyboard, monitor, printer and scanner.
peripheral
TV-Resolutions: Each line is drawn Requires higher refresh rates Smoother picture
progressive
