It 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 LCD. Visitor counting is simply a measurement of the visitor traffic entering and exiting. Offices, malls, sports, venues etc. Counting the visitors helps to maximize the efficiency and effectiveness of employees, floor area and sales potential of an organization.
Visitor counting is not limited to the entry/exit point of a company but has a wide range of applications that provide information to management on the volume and flow of people throughout a location. A primary method for counting the visitors involves sharing human auditors to standard manually tallies the number of visitors who pass by a certain location. But human-based data collection comes at great expense. Here is a low-cost microcontroller based visitor counter that can be used to know the number of persons at a place. All the components required are readily available in the market and the circuit is easy to build.

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