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View Full Document G. Rizzoni, Principles and Applications of Electrical Engineering
Problem solutions, Chapter 14
14.1
Chapter 14 Instructor Notes
Chapter 14 logically follows the material on combinational digital logic circuits introduced in
Chapter 13.
Section 14.1 contains a discussion of sequential logic modules; the box
Focus on
Measurements: Digital Measurement of Angular Position and Velocity
(pp. 679681) illustrates the use of a
counter to measure the speed of rotation of a slotted wheel;
this is a very common measurement in
mechanical systems; the box
Focus on Measurements: SevenSegment Display
(pp. 682683) draws
attention to a very common logic module.
Section 14.2 provides an elementary introduction to sequential
logic design, and Section 14.3 introduces microcomputers.
This, and the two following sections on
microcomputer architecture and microcontrollers, have been extensively revised, and are designed to
provide an introduction to the concept of mechatronic design (see box on p. 688), recognizing that it is
impossible to include a serious coverage of microcontrollers in a single chapter.
Thus, the treatment is
focused on an overview of the organization of microcontrollers, including a brief, qualitative illustration of
computer interface issues presented in
Focus on Measurements: Reading Sensor Data By Using Interrupts
(pp. 697698).
The last section, 14.6, is dedicated to an example (courtesy of Delphi – Delco Electronic
Systems) that describes a current automotive engine microcontroller.
The example is a qualitative
description, but will permit the instructor who desires to do so to motivate further study of this topic.
The
FindItOnTheWeb references will provide students and instructor with additional reference material on
the subject of automotive engine control.
In recent years mechanical and industrial engineering programs have seen a significant growth in
courses related to mechatronics, or more specifically to microcontroller applications in industrial and
mechanical systems.
The objective of Chapter 14 is to serve as an introduction to such courses.
The homework problems are mostly devoted to sequential logic circuits; the last 6 problems
review simple concepts related to the architecture and functions of microcomputers.
Learning Objectives
1.
Analyze the operation of sequential logic circuits.
Section 1.
2.
Understand the operation of digital counters. Section 1
.
3.
Design simple sequential circuits using state transition diagrams. Section 2
.
4.
Study the basic architecture of microprocessors and microcomputers. Sections 3,4, 5
.
G. Rizzoni, Principles and Applications of Electrical Engineering
Problem solutions, Chapter 14
14.2
Section 14.1:
Sequential Logic Modules
Section 14.2:
Sequential Logic Design
Problem 14.1
Solution:
Known quantities:
For the circuit shown in Figure P14.1, the input is a square wave having a period of 2 s, maximum value of
5 V, and minimum value of 0 V.
Assume all flipflops are initially in the RESET state.
Find:
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This note was uploaded on 04/08/2009 for the course ELE ELE1403 taught by Professor Khaled during the Spring '09 term at NYU Poly.
 Spring '09
 Khaled

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