What type of output can a comparator produce?

A comparator is an electronic device that compares two voltages or currents and produces a digital output based on the comparison. Specifically, it outputs a high or low signal depending on whether the input voltage is above or below a reference level. When the non-inverting input voltage exceeds the inverting input voltage, the output goes high (often close to the positive supply voltage). Conversely, when the non-inverting input voltage is less than the inverting input voltage, the output switches to low (often close to the ground level).

The nature of this output—being binary—makes it well-suited for digital logic applications, where a clear on/off indication is required. This functionality distinguishes comparators from other types of wave-producing devices, which may generate smoother, continuous signals like triangular or sine waves, or outputs that vary in frequency. Comparators serve a specific role in providing precise threshold detection rather than generating varying signal types or frequencies.