I have a test box which displays 14 bits of LEDs either green (good bit) or red (bad bit or Low). I would like to take the 14 bits of TTL data and display them on a computer screen so I can read the bits as hex data. Since I have to test 50 pieces at least 3x it would be helpful to read the data instead of count LEDs in order. I can find a parallel to USB adapter but cannot find a program to display the data let alone in hex.

Any suggestions for computer program or system? I would entertain a microcomputer like the raspberry pi or minnowmax turbo interface if the routines are available.

Thanks

 

I have a test box which displays 14 bits of LEDs either green (good bit) or red (bad bit or Low). I would like to take the 14 bits of TTL data and display them on a computer screen so I can read the bits as hex data. Since I have to test 50 pieces at least 3x it would be helpful to read the data instead of count LEDs in order. I can find a parallel to USB adapter but cannot find a program to display the data let alone in hex.

Any suggestions for computer program or system? I would entertain a microcomputer like the raspberry pi or minnowmax turbo interface if the routines are available.

Thanks

With 14 bits, you have 16384 possible combinations.
The simplest way is to read all 14 bits into two 8-bit ports of a microcontroller and send the data out via whatever means you desire, such as USB.