Abstract
Along with the development of taxi trade, counting fees that the requirement of ware is also more and more higher to the taxi, user not only asks to count fees, and the ware function is stable, and it is accurate to count fees, and has guarding against the function cheated; At the same time still ask his to possess ticket material to print and IC blocks paying fees and computer string capable communication function.The method that hardware and software each other combine is adopted in this design, and takes one piece machine as the nucleus, printting to doing business information all did the detailed introduction from the circle pulsing,To the content of 89C51 and MAX813L Guarding the entrance the dog and the introduction that reduces the circuit to blame for focal point at the same time, this system still possesses to prevent to disturb and the function guarding against the dead machine, and special in the taxi design during power supply of system, possessing fairly strong steady pressure effect, the system adopted IC Block the memory, and can make things convenient for just the information of safe record customer and Che owner.
Keywords： The dog is guarded the entrance 89c51 Circle pulse Anti-jamming
