Airborn Computers Flashcards
Computers busses
~parallel bus: can transmit data over separate lines at the same time
~phase shift bus: power generation and distribution on a large scale
~serial bus sends 1 piece ata time through a single connection
Computers
Outputs :
~Master indicator
~visual warning
~audio waring
Two type of screens
~cathode ray tube
~liquid crystal display
Electron gun when shoot the glass tube ,it glows phosphor when hit by electron
~Cathode and heater:
The heater heats up the cathode which emits electron
~anodes: a series of anodes with holes in are used to focus the beam
~the X and Y plates sweep the bottom from top to bottom in parallel lines
~when the beam moves from the end of one line the start of the next it is called FLYBACK
~if the screen is bigger than the raster the image is overscanned to take up the extra space
~interlacing ,is a cheap methos which takes 2 passes to fill the screen doing every other line time
~liquid crystals exit in oslid or near liqui states
~mear liquid state scrytsal can pass light