One shot is interesting and invaluable programming tool. At first sight, difficult to figure out why we have such an instruction. Once we understand what this command does and how to use them, but will have to clarify.

One-shot is used to make something happen just 1 WCD. (You name it, scan, right?) Most manufacturers have one-shots that address the transition and another type that corresponds to the transition path. Some names for instructions Difu / difd (modulate up / down), spot / sotd (a production of up / down), OSR (one-shot rising) and others. Everyone, however, ends with the same result regardless of the name.

difu symbo
One-shot instructions
Above is the symbol for Difu (one-shot) instructions. Difd looks the same, but within the symbol says, “difd. Some producers in the form of the box, but regardless of the symbol, all functions in the same way. For manufacturers, the distinction no instructions are, you get the same effect by NC (normally closed) instructions from him instead of NO (normally open) inquiry. (ie inverted logic Difu instructions)
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