Display device and input/output device

An input/output device comprising:

• an IC comprising:
• a current detection circuit comprising:
• an integrator circuit;
• a comparator;
• a counter;
• and
• a latch;
• and
• a display device comprising a driver circuit and a pixel,
• wherein the integrator circuit is configured to integrate a potential of a first signal during a period determined by a second signal, and to output the integrated potential as a third signal,
• wherein the comparator is configured to compare a potential of the third signal with a first potential, and to output a fourth signal,
• wherein the counter is configured to output a number of pulses included in a fifth signal as a sixth signal during a period determined by the fourth signal, and
• wherein the latch is configured to hold the sixth signal.

An input/output device comprising:

• an IC comprising:
• a current detection circuit comprising:
• an integrator circuit;
• a comparator;
• a counter;
• and
• a latch;
• and
• an input device comprising an input portion and a pixel,
• wherein the integrator circuit is configured to integrate a potential of a first signal during a period determined by a second signal, and to output the integrated potential as a third signal,
• wherein the comparator is configured to compare a potential of the third signal with a first potential, and to output a fourth signal,
• wherein the counter is configured to output a number of pulses included in a fifth signal as a sixth signal during a period determined by the fourth signal, and
• wherein the latch is configured to hold the sixth signal.