What is the difference between the DN and EN outputs of a timer or counter in a PLC? Describe how each of these outputs can be used in a program.

10-

a) What must always be used with an Oscilloscope when making a measurement?

b) How do you read the amplitude (Frequency) of a signal from the waveform on an oscilloscope?

c) How do you calculate phase shift by measuring the time delay between zero crossings of two different signals?

8-

a) How is execution order determined in LabVIEW?

b) What is the difference between a ‘For-Loop’ and a ‘While-Loop?’

c) What is a cluster in LabVIEW? What is an array in LabVIEW? When should each be used?

d) Explain two methods for creating a SubVI.

e) Where/How is the “Description and Tips” comments entered for a VI? For a control? For an indicator?

f) What two structures are used in a state machine implementation in LabVIEW? How are they configured?

In C# code, how can we handle this dual nature of Y/y and N/n?

Give a working block diagram of the PLL circuits and explain the purpose of using PLL circuit instead of a voltage controlled oscillator

write a matlab code of current distribution in wire antenna using method of moments
(pocklington)

To develop a program for the PIC 16F84A using either MPLAB X IDE simulator software. T

he PIC 16F84A has 8 LEDs connected to Port B. The program is to convert your student number (10 ASCII characters), taken in reverse order, one character at a time, to Gray code.

Each converted character is to be displayed on 4 of the LEDs connected to Port B (B0 to B3) of the microcontroller.

Further, each converted character will be displayed for 3 seconds, with the LEDs turned OFF for 1 second between each character. Once all characters have been displayed the program will continue to run with all of the Port B LEDs flashing in a pattern of Odd Numbered LEDs On and Even Numbered LEDS Off for 1 second, and then Odd Numbered LEDs Off and Even Numbered LEDS On for 1 second. This pattern will repeat indefinitely.  

10-

a) What must always be used with an Oscilloscope when making a measurement?

b) How do you read the amplitude (Frequency) of a signal from the waveform on an oscilloscope?

c) How do you calculate phase shift by measuring the time delay between zero crossings of two different signals?

7-

a) What components determine the frequency of an astable, 555 oscillator? Draw the circuit.

b) Draw a circuit for both an astable and a monostable, 555 multivibrator.

c) What is the duty cycle and percentage duty cycle of a pulse train or square wave?

d) What is the overshoot, rise time, fall time, and pulse width of a pulse and where on the waveform is each measured?

What is the difference between A. Scanning Electron Microscope (SEM) B. Transmission Electron Microscope (TEM) C. Atomic Force Microscope (AFM). The difference must include the Principle, Operation, and recent Applications

I would like to power and drive a vehicle using:

2 x 6V geared mini DC motors
1 x 5V Color recognition sensor
1 x Arduino Nano

I this possible? If so please explain how and provide a detailed schematic and list of parts needed. How do I supply 6 V to each motor, if the Arduino Nano only puts out 5 V?

Thanks

a)       What are the most important attributes of an output stage amplifier?

b)      Explain the importance of high efficiency in high power circuits.

c)       Explain how the class AB stage circuit overcomes the dead zone in output voltage current and voltage.

d)      Explain the operation of the CMOS class AB output stage circuit.

e)      How does a class D output amplifier stage differ from class A, B, or AB stages?

Data protection must be provided at three different levels 1) data at rest 2) data in use and 3) data in motion.

Question: provide recommendations and best practice policies that a company must follow in order to protect sensitive data for each one of the 3 different levels

a) Write C code using if statements to display ‘Freshman, ‘Sophomore’, ‘Junior’ or ‘Senior’ based on what value is in variable classification. Display ‘unknown ’ if classification does not contain ‘f’, ‘s’, ‘j’or ‘r’. Allow upper or lower case in variable color. In other words either ‘r’ or ‘R’ will display ‘Senior’.

b) Write C code to do the same thing as the previous problem, but use a switch statement.