1, IPAD has no USB interface, so data transmission is a big problem, and it is difficult for universities to have a smooth WIFI network and transmit data through the network.
2.IPAD only works in the IOS version of OFFICE, which is different from the WINDOWS standard version. Even if you edit a good file on IOS, there is a risk of format confusion on other computers.
3.IPAD can't be installed casually like a computer, because many of them are not suitable for running on it. Compared with ProE and other drawing IPAD systems, it doesn't exist and can't run.