Unit 8: Electronics and Technology. Section 1: Electronic Signals & Semiconductors Objectives: ...
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Transcript of Unit 8: Electronics and Technology. Section 1: Electronic Signals & Semiconductors Objectives: ...
Unit 8: Unit 8: Electronics and TechnologyElectronics and Technology
Section 1: Section 1: Electronic Signals & SemiconductorsElectronic Signals & Semiconductors Objectives:Objectives:
Define and compare digital and analog signalsDefine and compare digital and analog signals Describe the use of semiconductorsDescribe the use of semiconductors
Assessment Anchor:Assessment Anchor: S8.A.3.2S8.A.3.2 S8.A.3.3S8.A.3.3
What is electronics?What is electronics?
The use of electricity to control, The use of electricity to control, communicate, and process informationcommunicate, and process information Based on electronic signalsBased on electronic signals
Electronic signal – a varying electric Electronic signal – a varying electric current that represents informationcurrent that represents information
Analog vs. Digital SignalsAnalog vs. Digital Signals
Analog – current is Analog – current is varied smoothly to varied smoothly to represent informationrepresent information
Ex: Playing a recordEx: Playing a record
Digital – current Digital – current changes in stepschanges in steps
Ex: Playing a CDEx: Playing a CD
SemiconductorsSemiconductors
We already talked about conductors and We already talked about conductors and insulators…what about semiconductors?insulators…what about semiconductors?
Definition: a material that conducts Definition: a material that conducts current better than insulators, but not as current better than insulators, but not as well as conductorswell as conductors
Examples of semiconductorsExamples of semiconductors
Diode – allows current to flow in only one Diode – allows current to flow in only one directiondirection
Transistor – amplifies electronic signal or Transistor – amplifies electronic signal or switches current on or offswitches current on or off
Integrated Circuit – a circuit manufactured Integrated Circuit – a circuit manufactured on a tiny piece of semiconductor (chip)on a tiny piece of semiconductor (chip)
Section 2: Section 2: Electronic CommunicationElectronic Communication
Objectives:Objectives: Explain the difference between AM and FM Explain the difference between AM and FM
radio signalsradio signals Apply the EM Spectrum to data transmissionApply the EM Spectrum to data transmission
Assessment Anchor:Assessment Anchor: S8.A.3.2S8.A.3.2 S8.A.3.3S8.A.3.3
Electromagnetic WavesElectromagnetic Waves
EM Waves allow for electronic signals to EM Waves allow for electronic signals to be carried over long distancesbe carried over long distances
TelephonesTelephones
Transmitter –converts sound into an Transmitter –converts sound into an electronic signalelectronic signal
Receiver – converts electronic signal back Receiver – converts electronic signal back to soundto sound
RadiosRadios
AM RadioAM Radio
AM = Amplitude AM = Amplitude ModulationModulation
The amplitude of the The amplitude of the wave is changedwave is changed
FM RadioFM Radio
FM = Frequency FM = Frequency ModulationModulation
The frequency of the The frequency of the wave is changedwave is changed
Section 3: Section 3: The Binary SystemThe Binary System
Objectives:Objectives: Describe how the binary system worksDescribe how the binary system works Convert numbers between binary and base-10Convert numbers between binary and base-10
Assessment Anchor:Assessment Anchor: S8.A.3.2S8.A.3.2 S8.A.3.3S8.A.3.3
Binary SystemBinary System
Uses combinations of 0 and 1 to represent Uses combinations of 0 and 1 to represent informationinformation
How does the binary system work?How does the binary system work?
Placeholders represent the numbers: 1, 2, Placeholders represent the numbers: 1, 2, 4, 8, 16, 32, etc…4, 8, 16, 32, etc…
The 0 and 1 represent how many of each The 0 and 1 represent how many of each placeholder there areplaceholder there are
Then you add the numbers togetherThen you add the numbers together
Practice with the binary systemPractice with the binary system
1616 88 44 22 11 NumberNumber
11
1515
3131
88
More Practice with the binary More Practice with the binary systemsystem
1616 88 44 22 11 NumberNumber
00 11 00 11 00
11 11 11 11 00
00 00 00 11 00
11 00 11 11 00