PART 1: PROBLEM SOLUTIONS ............................................................................................1
CHAPTER 1 Introductory Concepts
... [Show More] ............................................................................................2
CHAPTER 2 Number Systems, Operations, and Codes ..............................................................7
CHAPTER 3 Logic Gates ..........................................................................................................23
CHAPTER 4 Boolean Algebra and Logic Simplification..........................................................35
CHAPTER 5 Combinational Logic Analysis.............................................................................60
CHAPTER 6 Functions of Combinational Logic.......................................................................95
CHAPTER 7 Latches, Flip-Flops, and Timers.........................................................................115
CHAPTER 8 Counters .............................................................................................................130
CHAPTER 9 Shift Registers ...................................................................................................159
CHAPTER 10 Memory and Storage ..........................................................................................175
CHAPTER 11 Programmable Logic and Software....................................................................185
CHAPTER 12 Signal Interfacing and Processing ......................................................................195
CHAPTER 13 Computer Concepts ............................................................................................204
CHAPTER 14 Integrated Circuit Technologies .........................................................................210
PART 2: SYSTEM APPLICATION ACTIVITY SOLUTIONS ..........................................217
CHAPTER 4 ............................................................................................................................218
CHAPTER 5 ............................................................................................................................221
CHAPTER 6 ............................................................................................................................223
CHAPTER 7 ............................................................................................................................228
CHAPTER 8 ............................................................................................................................230
CHAPTER 9 ............................................................................................................................233
CHAPTER 10 ............................................................................................................................234
CHAPTER 11 ............................................................................................................................235
PART 3: OVERVIEW OF IEEE STD. 91-1984 .....................................................................239
PART 4: LABORATORY SOLUTIONS FOR EXPERIMENTS IN DIGITAL
FUNDAMENTALS by David Buchla......................................................................265
iii
PART 1
Problem Solutions
Chapter 1
2
CHAPTER 1
INTRODUCTORY CONCEPTS
Section 1-1 Digital and Analog Quantities
1. Digital data can be transmitted and stored more efficiently and reliably than analog data. Also,
digital circuits are simpler to implement and there is a greater immunity to noisy environments.
2. Pressure is an analog quantity.
3. A clock, a thermometer, and a speedometer can have either an analog or a digital output.
Section 1-2 Binary Digits, Logic Levels, and Digital Waveforms
4. In positive logic, a 1 is represented by a HIGH level and a 0 by a LOW level. In negative logic,
a 1 is represented by a LOW level, and a 0 by a HIGH level.
5. HIGH = 1; LOW = 0. See Figure 1-1.
6. A 1 is a HIGH and a 0 is a LOW:
(a) HIGH, LOW, HIGH, HIGH, HIGH, LOW, HIGH
(b) HIGH, HIGH, HIGH, LOW, HIGH, LOW, LOW, HIGH
Chapter 1
3
7. See Figure 1-2.
8. T = 4 ms. See Figure 1-3.
9. f =
4 ms
1 = 1
T
= 0.25 kHz = 250 Hz
10. The waveform in Figure 1-61 is periodic because it repeats at a fixed interval.
11. tW = 2 ms; T = 4 ms
% duty cycle = ⎟⎠
⎞
⎜⎝
= ⎛ ⎟⎠
⎞
⎜⎝⎛
4 ms
W 100 2 ms
T
t 100 = 50%
12. See Figure 1-4. [Show Less]