AI Programs
Usually, we use to operate them in computer-simulated worlds.
Generally, input is given in the form of symbols and rules.
To operate this, we need general-purpose/Special-purpose computers.
Robots
Generally, we use robots to operate in the real physical world
Inputs are given in the form of the analogue signal or in the form of the speech waveform.
Also, to operate this, special hardware with sensors and effectors are needed.