Problem 1
"CD quality" sound is represented by using 2 channels (stereo) and for
each channel taking 44,100 samples per second and
using 16 bits per sample. Another alternative is "radio quality" sound.
This representation uses only one channel (mono) at a sample rate
of 22,050 samples per second and only 8 bits per sample. Approximately
how many hours of sound recording can be stored in on a 1 Gigabyte disk
in each of CD quality and radio quality representation?
A 1 Gigabyte disk can hold approximately 8 billion bits.
Problem 2
Give the table of values (called the truth table)
for the following Boolean expression
(x or y) and (!x or !y)
Do you recognize this function?
Problem 3
The truth table below shows the value of the carry bit resulting from the
addition of 3 operand bits: x, y, and z.
Write an expression using AND, OR, and NOT to represent the carry bit function.
x y z | carry(x,y,z)
-------|-------------
0 0 0 | 0
0 1 0 | 0
1 0 0 | 0
1 1 0 | 1
0 0 1 | 0
0 1 1 | 1
1 0 1 | 1
1 1 1 | 1
Problem 4
x y | f(x,y)
------|---------
0 0 |
0 1 |
1 0 |
1 1 |
Problems 5 - 7
From Brookshear, Chapter One Review Problems (pg. 73):
31,
32,
33-b