No, an iPad is a computing device in itself. It has input methods, such as the touch screen and BlueTooth, and can be used to control other computers and devices through apps and wireless networks.

keyboard

Computers gather data which means that they allow users to use input data. Input data is a computer file that contains data that serves as input to a device or program.

Chinese

Back in the day computers input data by a CD ROM. In today's computer all you have to do is have a hard drive.