这是一个停车场管理系统，能实现停车场车辆的进出库，并且能实现车辆离开时自动计时和计算停车时所需要交纳的停车费，同时能实现数据的备份和还原。-This is a car park management system, to achieve out of the basement car park of the vehicle, and can automatically calculate the timing and the need to pay for parking when parking the vehicle to leave, and can backup and restore data.