BORAD PRAFUL V.(140213111002)

GILATAR GHANSHYAM T .(140213111006)

GOHEL JAYDEV K .(140213111007)

INTRODUCTION The object of this project is to determine and display the

frequency of the input power. This is done by using 8051 microcontroller.

Most frequency counters work by using a [counter] which accumulates the number of events occurring within a specific period of time.

After a preset period (1 second, for example), the value in the counter is transferred to a display and the counter is reset to zero.

If the event being measured repeats itself with sufficient stability and the frequency is considerably lower than that of the clock oscillator being used, the resolution of the measurement can be greatly improved by measuring the time required for an entire number of cycles, rather than counting the number of entire cycles observed for a pre-set duration.

BLOCK DIAGRAM

CIRCUIT DIAGRAM

WORKING The object of this project is to determine and display the frequency of the input power. This is

done by using 8051 microcontroller. The circuit of our designed frequency meter includes

8051 microcontroller, Liquid Crystal Display(LCD),Cathode Ray Oscilloscope(CRO) and

variable power supply unit.

The CRO is used to display the frequency waveform of the given input power. Based on the

source code given to the 8051 microcontroller it detects the frequency value and displays that

value with the help of the LCD employed. Depending on the power supply the value of the

frequency on the LCD changes.

Most frequency counters work by using a [counter] which accumulates the number of events

occurring within a specific period of time. After a preset period (1 second, for example), the

value in the counter is transferred to a display and the counter is reset to zero. If the event

being measured repeats itself with sufficient stability and the frequency is considerably lower

than that of the clock oscillator being used, the resolution of the measurement can be greatly

improved by measuring the time required for an entire number of cycles, rather than counting

the number of entire cycles observed for a pre-set duration.

Frequency counters are commonly used in laboratories, factories, and field environments to

provide direct frequency measurements of various devices. The most common applications for

frequency counters are measurement and characterization of oscillator and transmitter

frequencies.

APPLICATION IN CRO

IN FUNCTION GENERATOR

IN LABORATRIES

USED AS A COUNTER