Answer the following questions (continued onto the next page): (a) What is the period of a 1KHz square-wave? (b) What is the period of a 4MHz square-wave? (c) How many periods of the 4MHz square-wave are there in one period of the 1KHz square-wave? (d) How many bits are needed to represent the number that is your answer to (c)? (One way to find out is to convert the number to binary and count the bits you needed; another is to take the base-2 logarithm of the number, and round it up to an integer.)