OJECTIV
Upon completion of this chapter, you will be able to:
» Describe the basic operation of a relay
» Interface the 8051 with a relay
» Describe the bask operation of an optoisolator
» Interface the 8051 with an optoisolator
» Describe the basic operation of a stepper motor
» Interface the 8051 with a stepper motor
» Code 8051 programs to control and operate a stepper motor
» Define stepper motor operation in terms of step angle, steps
per revolution, tooth pitch, rotation speed, and RPM
» Describe the basic operation of a DC motor
» Interface the 8051 with a DC motor
» Code 8051 programs to control and operate a DC motor
» Describe how PWM is used to control motor speed
