CONTROL DC MOTOR CAR

In the scan system is applied of ultrasonics transducer. The principle of its is to send a ultrasonic wave to an object and listens for the echo. The returning time of the echo is sent to calculate the distance based on the sound speed in air. This system can be used for detect the object in the radar system. We have invented the observation car for survey someplace where we cannot approach but we want to know what is there. We can send it go to there and watch the result on the monitor.

The purpose of this project is to study and design of interfacing between a microcomputer and the telephone system for using the performance of present microcomputer in some automatic operations of telephone. In the first step, the phone call via keyboard is implemented with busy line status monitor. When the number is called, the system is able to play the role as an automatic answering machine. Two main parts of this system consists of the hardware and the software developed in Delphi.