To send any command from Table 1 to LCD in Figure 3, pin _and ____must be sent t

Question

To send any command from Table 1 to LCD in Figure 3, pin _and ____must be sent to the _____to enable the _____of the KCD. a. RS = 1, High-to-low pulse, E pin, Enable the internal latch b, 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 To send data to the LCD for display, set____ Send____ to the ____to 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 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

28.

Ans b. RS=0 High to low pulse, E Pin, Enable the internal latch

29.

Ans a. RS=1 High to low pulse, E pin, Enable the internal latch

Explanation of 28 & 29. Function of RS ( resister select) - selects command register when low and data registerling when high.

Function of E ( enable pin) - sends data to data pins when high to low pulse is given, extra voltage pulse is required to execute the instruction and EN signal is use for this purpose.

Usually we make it EN=0 and when we want to execute the instruction we make it high EN=1 for some mili seconds. After that we make it ground that is en=0.

30.

Ans d. All of above

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