how to convert to digital output

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izzul

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hello friends,

i need some help.
Now I am a final year student at a university. I got a project, to me it is very difficult.

how can I convert the physical signal to digital signal?
for example, from flow of water, convert to voltage output.
 

for every physical quantity to measure
you must have appropriate transducer(or sensor) for it.

for example ,
measure water flow - have a flow sensor for water .
pressure - pressure sensor ...

the output of such sensors may be in analog or digital form

srizbf
10thmay2010
 

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