Device for automatic detection of coupling between electronic devices

A computer comprising:

• a first computer pin,
• a second computer pin,
• a third computer pin, and
• a hardware interface comprising:
• a first hardware interface input, a second hardware interface input, a third hardware interface input, which are coupled, respectively, to the first computer pin, to the second computer pin and to the third computer pin,
• the hardware interface further comprising:
• a first resistor with a first first resistor pin and a second first resistor pin,
• a second resistor with a first second resistor pin and a second second resistor pin,
• a transistor, and
• a comparator;
• the first first resistor pin being coupled on the one hand to the first hardware interface pin and on the other hand to a first transistor pin;
• the second first resistor pin being further coupled on the one hand to the first second resistor pin and on the other hand to a second transistor pin;
• the transistor comprising a third pin;
• the second second resistor pin being coupled on the one hand to the second hardware interface pin and on the other hand to a second comparator input;
• the second hardware interface pin being coupled to the first hardware interface output;
• the comparator further comprising a first input;
• and
• the first comparator output being coupled to the second hardware interface output.