Abstract
This text introduced a design for according to single a basketball of machine game timer hardware designing, including AT89C51, data lock saving machine 74 HC573s, manifestation driving SN7407,6 eight manifestationses LED, ascending wiring reply first the electric circuit, clock takes place basic mold in etc. in electric circuit piece.Its function has primarily:A basketball game is divided into totally four section, each stanza 12 cent;Take the offensive to 24 way for, timer have to showing all for pouring accounting hours each time;The timer use( two cents, two seconds) four every stanza in luck,24 seconds account use two figureses tube manifestation;All account all have the pause, continue, the pure zero adjusts the function with time;When each stanza game time ends,24 seconds pour to account reduce to have the sound and light to hint for the zero.Article point to design the project proceeded the discussion.
Keywords：MicroControllerUnit，Calculagraph，Count down ，LED
