Unit 1　Introduction to Electronic Components　1
PartⅠ Technical and Practical Reading　1
Reading A Electronic Components (Ⅰ)　1
Notes　3
New Words　3
Phrases and Expressions　4
Reading B Electronic Components (Ⅱ)　6
New Words　7
Phrases and Expressions　8
PartⅡ Glance at the Structure of the Electronic Components　9
PartⅢ Put into Use　10
Section A Test Your Skill　10
Section B Have a Try　12
PartⅣ Broaden Your Horizon—Practical Activity　14
Part V Listening and Speaking —

Unit 2　Introduction to Basic Electronic Circuits　16
PartⅠ Technical and Practical Reading　16
Reading A Electronic Circuits (Ⅰ)　16
Notes　18
New Words　18
Phrases and Expressions　19
Reading B Electronic Circuits(Ⅱ)　21
New Words　23
Phrases and Expressions　24
PartⅡ Glance at the Structure of the Circuit　26
PartⅢ Put into Use　27
Section A Test Your Skill　27
Section B Have a Try　29
PartⅣ Broaden Your Horizon—Practical Activity　30
Part V Listening and Speaking —

Unit 3　Introduction toDigital lectronics　33
PartⅠ Technical and Practical Reading　33
Reading A Digital Electronics (Ⅰ)　33
Notes　35
New Words　35
Phrases and Expressions　36
Reading B Digital Electronics (Ⅱ)　37
New Words　40
Phrases and Expressions　40
PartⅡ Glance at the Structure of the Integrated Circuit　41
PartⅢ Put into Use　42
Section A Test Your Skill　42
Section B Have a Try　44
PartⅣ Broaden Your Horizon—Practical Activity　46
Part V Listening and Speaking —

Unit 4　Introduction to Analog Electronics　49
PartⅠ Technical and Practical Reading　49
Reading A Analog Electronics (Ⅰ)　49
Notes　52
New Words　52
Phrases and Expressions　53
Reading B Analog Electronics (Ⅱ)　55
New Words　57
Phrases and Expressions　58
PartⅡ Glance at the Structure of the Electronic Component　59
PartⅢ Put into Use　61
Section A Test Your Skill　61
Section B Have a Try　62
PartⅣ Broaden Your Horizon—Practical Activity　64
Part V Listening and Speaking —

Unit 5　Introduction to Sensors　66
PartⅠTechnical and Practical Reading　66
Reading A Basic Sensors　66
Notes　68
New Words　68
Phrases and Expressions　70
Reading B Application of Sensors　71
New Words　74
Phrases and Expressions　75
PartⅡ Glance at the Structure of the Sensor　76
PartⅢ Put into Use　77
Section A Test Your Skill　77
Section B Have a Try　79
PartⅣ Broaden Your Horizon—Practical Activity　80
Part V Listening and Speaking —

Unit 6　Application of Electromotor　82
PartⅠ Technical and Practical Reading　82
Reading A What Is Alternating Current (AC)　82
Notes　84
New Words　84
Phrases and Expressions　85
Reading B DC Motor　86
New Words　89
Phrases and Expressions　89
PartⅡ Glance at the Structure of the Motor　91
PartⅢ Put into Use　92
Section A Test Your Skill　92
Section B Have a Try　94
PartⅣ Broaden Your Horizon—Practical Activity　95
Part V Listening and Speaking —

Unit 7　Introduction to Programmable Logic Controller　98
PartⅠ Technical and Practical Reading　98
Reading A Programmable Logic Controller (Ⅰ)　98
Notes　100
New Words　100
Phrases and Expressions　101
Reading B Programmable Logic Controller (Ⅱ)　103
New Words　105
Phrases and Expressions　105
PartⅡ Glance at the Structure of the PLC　107
PartⅢ Put into Use　108
Section A Test Your Skill　108
Section B Have a Try　110
PartⅣ Broaden Your Horizon—Practical Activity　111
Part V Listening and Speaking —

Unit 8　Introduction to Automatic Control System　114
PartⅠ Technical and Practical Reading　114
Reading A Automatic Control System (Ⅰ)　114
Notes　116
New Words　116
Phrases and Expressions　117
Reading B Automatic Control System (Ⅱ)　118
New Words　120
Phrases and Expressions　120
PartⅡ Glance at the Structure of the Timer Pin Connection　121
PartⅢ Put into Use　123
Section A Test Your Skill　123
Section B Have a Try　124
PartⅣ Broaden Your Horizon—Practical Activity　127
Part V Listening and Speaking —

Unit 9　Introduction to Basic Microcontroller　130
PartⅠ Technical and Practi