用户可以根据流程图很快就可以了解该模拟柜员机的使用：用户输入正确的账号和密码就可以登录到该系统中去，进行相应的操作：取款、存款、查询、修改密码。-User according to the flow chart quickly can understand the use of ATMs of the simulation: the user enters the correct account number and password you can log into the system, the corresponding operation: withdrawals, deposits, inquiries, change your password.