enable data to be entered without human intervention
a mouse and a keyboard are the same .initially i used to prefer a mouse alone but it had no disadvantages and neither did the keyboard
Input Devices provide input signals to Computing devices. There can be disadvantages for a particular type of Input Device such as Mouse, Keyboard, Pointers etc. Nonetheless without Input devices Computer might not be able to receive information & remain useless.
The difference is that an Non-Automated Input Device is used when the user is the source of input (e.g the data will be typed in or draw by the user), while Automated Input Devices are use in situations where the data is already prepare in a form which the input device can pick up and transmit directly into the computer.
is that it acts as both an input and output device.
You can answer people. People can answer you. What the real question is, how is it a disadvantage?
As there is no alternative to input and output devices, other than doing nothing, they have no inherent disadvantages.
It is an input device.
There are no inherent disadvantages in having or using an input device. As a matter of fact, there simply aren't any alternatives, so it would be largely irrelevant, anyway.
it is an input device
The full form of MICR is Magnetis Ink Character Reader.
it is input
Web-cams are input devices.