In a microprocessor project (shield) for control applications, a triggered clock can be useful. Triggering allows you to start the operation at the right time and also stop it at the right time. The circuit shown in the figure works at a relatively low frequency, of the order of a few kilohertz, but the reduction in the capacitor can raise this operation up to a few megahertz, which is the limit of 4011. At the output we have the corresponding waveforms, noting that the high-level application starts the oscillator.
