|USB : USB Classes USB Classes for Microcontrollers|
USB Mass Storage Device (MSD) class is very popular among microcontroller developers.
An MSD class device can look like a standard disk drive, one that happens to be connected to the PC over a USB cable. MSD devices have been made popular by the handy, useful, inexpensive little USB "thumb drives" that are available everywhere these days.
Microcontroller developers like the idea of making a datalogger that can collect a lot of data (whether or not they are connected to a PC at the time), and then the device can be connected to a PC to upload its data by just a drag and drop operation in Windows Explorer.
This is seen by many developers as being easier than having to write a Windows program to upload the data from the datalogger. Unfortunately, this doesn't necessarily turn out to be true in all cases.
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