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Andy Neil
12/03/11 08:00
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#185004 - Parallel IO from USB
Responding to: Andy Neil's previous message
Andy Neil said:
Wouldn't it make more sense to use a serial port (either a "real" COM port, or a USB "virtual" one) and an 8051 as an external "IO controller"...?

FTDI (possibly also others) make chips & modules which can give you parallel IO direct from USB.

For an out-of-date example, see:

The Current range of FTDI modules is here: - you want the ones with the "FIFO" interface.

See also:

One big advantage of USB is that it is specifically designed to supply power to the device - something which neither RS232 nor an LPT port is designed to do.

List of 4 messages in thread
Parallel port      Edgar Kaveli      12/02/11 17:50      
   Can you show a schematic?      Michael Karas      12/02/11 18:48      
   Why the parallel port?        Andy Neil      12/03/11 05:12      
      Parallel IO from USB      Andy Neil      12/03/11 08:00      

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