$1.(4$ Points$)$ From our recent lectures on analog to digital converters $($ADC$)$ you studied several methods of sampling the analog data to allow it to be converted to digital data. The most used method is the Sample$-$and$-$Hold method. Using the $2$ charts below, illustrate this method, with the vertical chart designators indicating when your ADC completed a sample. Each successful chart is worth $2$ points.