1 Digital systems and the representation of information

Aims and objectives

1.1 The realm of digital systems

1.2 Representing numbers in a digital system

1.3 Performing arithmetic with binary numbers

1.4 Representation of alphanumeric symbols

1.5 Digital logic example

1.6 Summary

1.7 Tutorial questions

1.8 Suggested further reading

2 Logic gates

Aims and objectives

2.1 Logic signals

2.2 Basic logic functions

2.3 Boolean relationships

2.4 Universal gates

2.5 Other gates

2.6 Gate design

2.7 Summary

2.8 Tutorial questions

2.9 Suggested furether reading

3 Designing combinational circuits

Aims and objectives

3.1 Combinational circuits

3.2 Implementing Boolean expressions

3.3 Alternative implementations

3.4 Simplifying logic circuits

3.5 MSI combinational logic devices

3.6 Summary

3.7 Tutorial questions

3.8 Suggested further reading

4 Flip-flops and counters

Aims and objectives

4.1 Sequential circuits

4.2 Memory design using gates

4.3 Flip-flops

4.4 Registers

4.5 Counters

4.6 Summary

4.7 Tutorial questions

4.8 Suggested further reading

5 Sequential circuit design

Aims and objectives

5.1 Synchronous sequential circuit model

5.2 Designing synchronous sequential circuits

5.3 Summary

5.4 Tutorial questions

5.5 Suggested further reading

6 Designing with programmable logic devices

Aims and objectives

6.1 Programmable logic devices(PLDs)

6.2 Combinational circuit PLDs

6.3 Sequential circuit PLDs

6.4 PLD programming tools

6.5 Using read-only memories(ROMs)

6.6 Summary

6.7 Tutorial questions

6.8 Suggested further reading

7 Testing logic circuits

Aims and objectives

7.1 The need for testing

7.2 Faults and fault models

7.3 Generating test vectors for combinational circuits

7.4 Testing sequential circuits and complex systems

7.5 Summary

7.6 Tutorial questions

7.7 Suggested further reading

8 Motivation for Hardware Description Languages

Aims and objectives

8.1 Problems with low level methods

8.2 Hardware Description Languages

8.3 Behavioral and structural description

8.4 Synthesis and simulation

8.5 Summary

8.6 Suggested further reading

9 Introduction to VHDL

Aims and objectives

9.1 A simple example in VHDL

9.2 Stylistic issues

9.3 The IEEE library

9.4 Conditionals in VHDL

9.5 Handling signals that are more than 1 bit wide

9.6 Summary

9.7 Tutorial questions

9.8 Suggested further reading

10 Behavioral and structural descriptions in VHDL

Aims and objectives

10.1 An example:an adder

10.2 A dataflow description of the full adder

10.3 Structural VHDL

10.4 Processes

10.5 Sequential and concurrent VHDL

10.6 Summary

10.7 Tutorial questions

10.8 Suggested further reading

11 VHDL simulation

Aims and objectives

11.1 Simulation

11.2 VHDL simulation of dataflow code

11.3 Simulation of structural VHDL

11.4 The uninitialized logic value U

11.5 Delay modeling

11.6 Test benches

11.7 Summary

11.8 Tutorial questions

11.9 Suggested further reading

12 Using VHDL to describe systems with a clock

Aims and objectives

12.1 Defining clocks,flip-flops and registers

12.2 Register Transfer Level(RTL)coding

12.3 Sequential logic

12.4 Summary

12.5 Tutorial questions

12.6 Suggested further reading

Answers to self-assessment questions

Index