[SOLVED] ultrasonic based distance measurement

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ayub shaikh

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i am working with a project based on ultrasonic and 89c2051 with TL084...these components are compulsory...so please help me
 

Write the user stories of what your project must do for example:
Generate 40 KHz carrier wave
Generate transmission pulses (2Hz)
Time period between TX and RX
Amplify received signal
Rectify received signal
Calculate distance
Display distance on LCD

.......
 

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