The job of AI is to design an agent program that implements the agent function:

The mapping from percepts to actions. We assume this program will run on some sort of ARCHITECTURE computing device with physical sensors and actuators—we call this the architecture:

Agent = architecture + program.

The program we choose has to be one that is appropriate for the architecture.

If the program is going to recommend actions like Walk, the architecture had better have legs.

The architecture might be just an ordinary PC, or it might be a robotic car with several onboard computers, cameras, and other sensors.

In general, the architecture makes the percepts from the sensors available to the program, runs the program, and feeds the program’s action choicest the actuators as they are generated.

The agent percepts the knowledge from environment and acts in the same. The agent first observes the input given then scans database for corresponding action. The database consists of input and actions.

Then the action is given as output and then it sets internal state to appropriate action