Q$6$ Design Problem $(20\text{'})$

Design a circuit to store the state of a switch when a normally open $($signal normally low$)$ button is first pressed down and increment a counter when the button is released, if the switch was down $($high$)$ when the button was first pressed. Assume that the button and switch are bounce free. Use readily available ICs $($logic$,$ flip$-$flops, one$-$shot, counter, etc.$)$ and specify their numbers on your schematic.

Requirements:

$(1)$ Maximum number of counts is $99($suppose we use decade counter$)$;

$(2)$ Display the count value on $7-$segment displays;

$(3)$ The counter value shall be cleared either when there is an over flow or manually.

Hint: Three steps to solve the problem:

$(1)$ Store the status of the switch only when the button is just being pressed;

$(2)$ If the stored switch status is high and the button is being released, then increment the count by one.

$(3)$ Counter value can be reset.

Please draw the schematic for me to understand! Thanks