Experiment 5 The Perfect Pencil Machine Objectives After completing this experiment, you wha be able to \\( \\square \\) Design and build the combinational portion of a logic circuit that delivers a "pencil" and "change" based on the value of "coins" that are entered. Write a formal laboratory report describing your circuit and results. Materials Needed Four LEDs One 4-position DIP switch Resistors: four \\( 1.0 \\mathrm{k} \\Omega \\), four \\( 330 \\Omega \\) Other materials as determined by student Summary of Theory Most digital logic circuits require more than simple combinational logic. They require the ability to respond to a series of events. For example, a coinoperated machine must "remember" the amount of money that has been inserted previously and compare it with the price of the product. When the amount of money is equal or greater than the price of the product, the machine delivers the product and any necessary change. This is an example of a sequential machine; the key difference between it and a co