Of or relating to computer systems that update information at the same rate as they receive data,enabling them to direct or control a process such as an automatic pilot.

• 同时属于或与这样一些计算机程序有关的，即这些程序可以在它们接收到数据的同时更新修改信息，这样就可以使它们能指导或控制某个程序，如自动导航系统。