The system is designed for optimum energy usage and is very beneficial in case if we want to count the number of people going to attend a particular event or any function thereby helps in collecting data by counting the number of people.This is done by simply incrementing the counter.
The system uses InfraRed Sensor pairs in order to fulfil this purpose and thus saves a large amount of energy. Each pair consists of 2 sensor pairs placed at a certain distance from one another in the opposite direction. The IR transmitter is used to transmit IR ....etc

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Pls gve me the description,code and circuit diagram for door lock system using seven segment display of 8051 ....etc

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Abstract:

We build a simple and inexpensive three digit display. It's a voltmeter module but it has also general purpose digital IO pins. You could use it as well to read a digital sensor and display the value. It can be freely programmed, calibrated and even be programmed with a non linear formula. It's a display where you can define the relation between the measured value and the displayed number. The ICL7107 is a high performance, low power, 3.5 digit analog to digital converter. The IC includes internal circuitry for seven segment decoders ....etc

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The seven elements of the display can be lit in different combinations to represent the arabic numerals. Often the seven segments are arranged in an oblique (slanted) arrangement, which aids readability. In most applications, the seven segments are of nearly uniform shape and size (usually elongated hexagons, though trapezoids and rectangles can also be used), though in the case of adding machines, the vertical segments are longer and more oddly shaped at the ends in an effort to further enhance readability.

The numerals 6 and 9 may be repre ....etc

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to get information about the topic stopwatch using microcontroller with 7 segment display full report ppt and related topic refer the page link bellow

http://seminarsprojects.net/Thread-digital-stopwatch

http://seminarsprojects.net/Thread-simple-digital-stopwatch-using-at89s51-microcontroller ....etc

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To get full information or details of water level indicator with seven segment display please have a look on the pages

http://seminarsprojects.net/Thread-Water-Level-Indicator-using-7-segment-display

http://seminarsprojects.net/Thread-Water-level-indicator-Full-Report--72741

if you again feel trouble on water level indicator with seven segment display please reply in that page and ask specific fields in water level indicator with seven segment display ....etc

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To get full information or details of water level indicator using seven segment display please have a look on the pages

http://seminarsprojects.net/Thread-water-level-indicator-using-7-segment-display

if you again feel trouble on water level indicator using seven segment display please reply in that page and ask specific fields in water level indicator using seven segment display ....etc

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This water-level indicator uses a 7-segment display, instead of LEDs, to indicate the water level (low, half and full) in the tank. Moreover, a buzzer is used to alert you of water overflowing from the tank. The circuit shows the water level by displaying L, H and F for low, half and full, respectively. The circuit uses five sensors to sense the different water levels in the tank. Sensor A is connected to the negative terminal (GND) of the power supply. The other four sensors (B through E) are connected to the inputs of NOT gate IC 7404. When t ....etc

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to get information about the topic 7 segment display RELATED TOPIC REFER THE LINK BELLOW

http://seminarsprojects.net/Thread-water-level-indicator-using-7-segment-display ....etc

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sir i want to save this project ....etc

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