USB based datalogger programming and PC software

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I am looking developer quite simple USB data acquisition application.

Here functions we need for USB card :

- fast cpu clock
- fast data transfer
- memory card (in case if someday needed, maybe battery operated if used as data logger)
- as much as possible expansion possibilities
- as much all sort of inputs as possible
- you may design also enclosure with nice connectors
- this will be used for automotive app, so that kind of inputs then needed
- we can use custom design or something ready from markets
- 4-8 ADC channels and at least 2 digital inputs, other type of inputs/output may also be needed later

Here requirements for PC software :

- fast data transfer, should be able to show realtime results
- language you suggest for programming?
- all libraries / components used must be free
- pc software should plot some graphs and show some results (I will provide sample codes and maths)

Let me know card you suggest for me and PC language you suggest to use?

After that I will send you more detailed list for PC software functions.



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