Problem 24
Choose the correct term from the following list. A. Signed-magnitude representation B. Radix point C. Frequency of use D. Sampling E. Analog F. Digital data is a discrete representation of information.
Problem 26
Choose the correct term from the following list. A. Signed-magnitude representation B. Radix point C. Frequency of use D. Sampling E. Analog F. Digital An audio signal is digitized by its value at regular intervals.
Problem 27
Why is data compression an important topic today?
Problem 28
What is the difference between lossless and lossy data compression?
Problem 30
Is a clock with a sweeping second hand an analog device or a digital device? Explain.
Problem 31
What does it mean to digitize something?
Problem 32
What is pulse-code modulation?
Problem 33
How many things can be represented with a. Four bits? b. Five bits? c. Six bits? d. Seven bits?
Problem 34
Although you have been computing simple arithmetic operations since the second grade, take the following quick test to confirm that you thoroughly understand operations on signed integers. Evaluate the following expressions where \(\mathrm{W}\) is \(17, \mathrm{X}\) is \(28, \mathrm{Y}\) is \(-29\), and \(\mathrm{Z}\) is \(-13\). a. \(\mathrm{X}+\mathrm{Y}\) b. \(\mathrm{X}+\mathrm{W}\) c. \(\mathrm{Z}+\mathrm{W}\) d. \(Y+Z\) e. \(W-Z\) f. \(\mathrm{X}-\mathrm{W}\) g. \(\mathrm{Y}-\mathrm{W}\) h. \(\mathrm{Z}-\mathrm{Y}\)
Problem 35
Use the base-10 number line to prove the solutions to the following operations, where \(\mathrm{A}\) is 5 and \(B\) is \(-7\). a. \(\mathrm{A}+\mathrm{B}\) b. \(\mathrm{A}-\mathrm{B}\) C. \(\mathrm{B}+\mathrm{A}\) d. \(B-A\)
