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Pre-Lab 1. Read the handout for Lab 07 in its entirety. Done? YES/NO 2. Answer the four questions in Section 7.3. 1. What is the period of a 50MHz square wave? [Answer Here] 2. If a decade down counter uses a 50MHz square wave as a clock, how many microseconds does it take for the counter to count through its pattern once? [Answer Here] 3. If you have a 50MHz clock, how many clock periods are there in a one-second interval of time? This number of clock periods would be the number to which a counter running on a 50MHz clock would need to count to roll over once per second. [Answer Here] 4. How many flip-flops would the one-second counter in (c) need? Hint: If a counter has to count up to a certain number, it needs enough flip-flops to hold the unsigned binary representation of that number. For example, the decade down counter counted as high as 9 , and 9 is " 1001 " in binary, so four flip-flops were needed [Answer Here] Table 7.1: Pin Assignments for the Decade Down Counter 4. Draw a state transition diagram for the decade down counter. [Insert Image Here] 5. Determine the pin assignments for the two single-bit inputs CLOCK and CLOCK ENABLE, as well as the two seven-bit outputs RIGHT DIGIT and LEFT DIGIT. Note that CLOCK must be connected to the system clock. The CLOCK ENABLE must be connected to a slide switch. The outputs LEFT DIGIT and RIGHT DIGIT must be connected to the leftmost- and next-leftmostseven segment displays. Pages 24, 26, and 28-29 of the DE10-LITE User Manual may be helpful for this task. Record these assignments in Table 7.2. laDie ,2: rin Assignments ror Une-Hundred