I'm building a prototype for a vending machine. It doesn't take money yet; If you press the a button it will give you the thing you want. There are 8 rows of items and 4 columns Each item is labeled with a letter (denoting the row) and a number (denoting the column) Thus I will have items ranging from A0-A3 all the way to H0-H3. Each item is connected to an actuator (a motor) that pushes the item out to vend it. Design the digital circuitry that will activate the appropriate actuator when pressed. You can assume that the user will only press one button at a time, you can assume that someone pressing the button is equivalent to that button being a digital 1, and you can assume that driving a 1 to the actuator will activate it appropriately. Here's the hitch: we have to be able to reprogram the thing, such that any button could activate any item slot, so you won't be able to just tie wires from the buttons to the actuators. Hint: You'll need decoders and memory I'm building a prototype for a vending machine. It doesn't take money yet; If you press the a button it will give you the thing you want. There are 8 rows of items and 4 columns Each item is labeled with a letter (denoting the row) and a number (denoting the column) Thus I will have items ranging from A0-A3 all the way to H0-H3. Each item is connected to an actuator (a motor) that pushes the item out to vend it. Design the digital circuitry that will activate the appropriate actuator when pressed. You can assume that the user will only press one button at a time, you can assume that someone pressing the button is equivalent to that button being a digital 1, and you can assume that driving a 1 to the actuator will activate it appropriately. Here's the hitch: we have to be able to reprogram the thing, such that any button could activate any item slot, so you won't be able to just tie wires from the buttons to the actuators. Hint: You'll need decoders and memory