Digital visitor counter is a reliable circuit that takes over the task of counting number of Persons/ Visitors in the Room very accurately. When somebody enters into the Room then the Counter is Incremented by one. The total number of Persons inside the Room is displayed on the seven segment display module. The microcontroller does the above job it receives the signals from the sensors, and this signals operated under the control of software which is stored in ROM. This project we will create counter system for apply. The total number of object is displayed on the seven segment display. The system is fully controlled by the 16 bit microcontroller 8051 which has a 4Kbytes of ROM for the program memory.