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5. In an audio CD, the audio voltage is typically sampled about 66,000 times per second, and the value of each sample is recorded on the CD surface as a binary number. In other words, each recorded binary number represents a single voltage point on the audio signal waveform. (8 points) If the binary numbers are 8 bits in length, how many different voltage values can be represented by a single binary number? Repeat for 9 bits and eleven bits. b. If twelve-bit numbers are used, how many bits will be recorded on the CD in one second. c. If a CD can typically store 9 billion bits, how many seconds of audio can be recorded when 12-bit numbers are used? Represent the statement "X-25/Y" in ASCII code (excluding quotes). Attach an even parity bit for each character. (3 points) Show the result of each of the following calculations in binary using the two's complement method. Assume 9 BITS. (8 points) a. 108 - 72 b. -63 -27