Refer to the problem 7 subcircuit. This is a specialized counter configuration known as a Johnson startup pulse generator which is designed to momentarily clear all of the flip-flops upon startup. This is to ensure that it will not be possible for the counter to startup in an invalid state- and therefore guarantees that the counter will never reach an invalid state. The invalid states for this counter are and . Counter. As configured, this is a 3-bit, MOD-6 counter. Like the ring counter, it has a Draw the state diagram for the counter below. Since it is not possible for this counter to reach the invalid states, it is not necessary to show the invalid states in your diagram. a. b. One of the properties of a Johnson counter is that the decoding circuitry is simpler than the decoding circuitry for a normal ripple counter. In fact, for a 3-bit Johnson counter, we only have to analyze two of the three bits in order to determine what state the counter is in. Because of the abnormal counting sequence, however, decoding this counter does NOT mean that we are trying to determine what binary number the counter is holding we are only trying to determine what state number the counter is in. The startup state is and therefore we count that as state "o". The next state will be and this is considered to be state "1" (although 100 is not the binary number for the decimal number 1). The next state is counted as state "2", and so on The parallel wires to the left of the AND gates are the normal and inverted outputs of e of the flip-flops. Connect the AND gate inputs as necessary to the counter ouputs s that they properly decode the six states of this counter. If you have done this corr the six LEDs, which are connected to the AND gates, should illuminate one after in sequential order from top to bottom as the counter increments. When you are finished save the file