29. To send data to the LCD for display, set Sendto the enable the of the LCD. a

Question

29. To send data to the LCD for display, set Sendto the enable the of the LCD. a. RS = 1, High-to-low pulse, E pin, Enable the internal latch b. RS 0, High-to-low pulse, E pin, Enable the internal latch C. RS -0, low-to-high pulse, E pin, Enable the internal latch d. RS-1, low-to-high pulse, E pin, Enable the internal latch e. none of the above 30. A stepper motor translates electrical pulses into mechanical movement it is used for position control in: a. disk drives, b. printers c. Robotics d. all of the above e. b and c only

Explanation / Answer

29.) When RS=1 the data is send to the LCD and pulse is set from LOW to HIGH thus LCD cares about what the implementation given and E Pin is enabled.

Thus above must be done to send data to LCD. So answer is D

30)Answer is D

Because the stepper motor is used in every application in the given options that are disk drives, printers and robotics. They are the basic operations of stepper motor.

31) In the given, the stepper motor make to move 96° for 4step sequence and have a step angle of 2°. So we can easily understand that one step take 2° angle and stepper motor is having 4 step sequence, so every move has 4 steps and it must do 96° for one move. 4 steps means 4*one step angle= 4*2°= 8° for one move.... So we can find that how many moves are consequently done for 96° move 8°* (No. Of consequent times) =96° No. Of consequent times=96/8=12 times

So answer is C

12 times of consequent 4step sequence with 2°step angle gives 96° for a move

Verify:

12time 4step sequence 2° angle

12*4*2=96°

32)Acces time:

Answer is A

It is the time taken for access or read the memory from the target

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