### Explain the purpose of a comparator

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Q1. Suppose you have a digital signal with a period of 1500 milliseconds. What is the period in microseconds?

Q2. What is the 12-bit BCD binary code for 53810?

Q3. Convert the 8-bit unsigned binary value 011110102 to its equivalent hexadecimal.

Q4. Convert the 8-bit unsigned binary value 111001012 to its equivalent decimal value.

Q5. Simplify the following Boolean expression.

A + AB + AB-C

Q6. Write the Boolean algebra expression for output C in the circuit below.

Q7. What is the decimal value for the following signed magnitude number, assuming the MSB is the sign bit?

01010011

Q8. Calculate the sum of the problem below and leave answer in binary form. Assume the number are unsigned magnitude.

01100111

+10001000

Q9. Calculate the two's complement of the following unsigned binary number.

100010012

Q10. Convert 10.510 to IEEE 754 format.

Q11. Write the Sum of Products expression of the circuit below.

Q12. Write the Product of Sums expression of the circuit below.

Q13. Explain the purpose of a comparator.

Q14. Assume even parity is being used when transmitting 8-bit bytes. What is the value of the parity bit (either 0 or 1) for the byte below, and explain how you arrived at your answer?

01100001

Q15. Explain the different types of ROM.

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