ECT 114 Week 7 iLab New

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ECT 114 Week 7 iLab New

1.Open the Quartus II software and create a new project called flip-flop. Using the Block Diagram/Schematic editor, create the diagram shown below. (10 points)

2.Compile and simulate the operation for the D flip-flop according to the following timing diagram. (15 points)

4.Open the Quartus II software and create a new project calledJKFlipFlop. Using the Block

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Diagram/Schematic editor, create the diagram shown below. (10 points)

6.Zip your entire project directory and submit the zipped file with your iLab. (5 points)

ECT 114 Week 6 iLab New

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ECT 114 Week 6 iLab New

1.Describe one practical application that uses an adder. (2 points) ___________A computer’s CPU._______________________

2. What is a major advantage of using two’s complement subtraction? (2 points)_______The 2’s complement allows hardware to subtract numbers by adding them.___________

3. Create the adder/subtractor circuit below using a 7483. (6 points)

4. From the circuit in problem 3, determine the proper output signals for S and CarryOut in the area provided in the figure below. (8 points)

7. Open the Quartus II software and create a new project calledW6iLab. Using the VHDL editor, create an addersub symbol based on the following code.

8.Create a Block Diagram/Schematic file, insert the VHDL symbol created from the addersub file, and then create and simulate waveforms to verify the code functions as an adder and subtractor. The input waveforms should be similar to what is shown below. A, B, and R should all be set up as hexadecimal values (right click on the signal name in the waveforms, go to the properties, and set the radix to hexadecimal). Paste the completed waveform into your lab. (10 points)

12.Examine the adder circuit with the measurements below. Examine the inputs and outputs as written on the schematic and determine faults on the gates and/or adder. Your response must be specific (example: XOR gate #4 has the incorrect output, or Pin C4 of the 7483 has the incorrect output). There are, at most, two errors in the circuit. (5 points)

ECT 114 Week 5 iLab New

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ECT 114 Week 5 iLab New

Problems:

1. efly explain the operation of a multiplexer

2. Describe one practical application that uses a multiplexer.

3. Briefly explain the operation of a demultiplexer. (1 point

4. Describe one practical application that uses a demultiplexer. (1 point

5. Complete the following timing diagram based on the data sheet for the 74151 multiplexer. (10 points)

6. Interpret the datasheet for the 74138 demultiplexer and complete the following timing diagram. (9 points)

7. Download and unzip the Quartus programming file entitled “multiplexer” to the folder c:\ECT 114 \week5 on your computer. The file is located in the “Doc Sharing (Week 5 Lab Files)” directory in eCollege. Note: You will not be able to recompile this project because you are only given the programming (.sof) file. The steps to programming a file are included in the Week 3 Lecture. Program the faulty 74151 multiplexer into the FPGA on your eSOC board. As you control the multiplexer inputs with switches, complete the following function table. If the LED is on, that corresponds to logic high. Off corresponds to a logic low. In order to see which input connects to the Y output, you will need to toggle the data switches one at a time. (10 points)

8. Compare the results of your table from the eSOC multiplexer to a data sheet and identify what line(s) are incorrect. (5 points)

9. Download and unzip the Quartus programming file entitled “demultiplexer” to the folder c:\ECT 114 \week5 on your computer. The file is located in the “Doc Sharing (Week 5 Lab Files)” directory in eCollege. Note: You will not be able to recompile this project because you are only given the programming (.sof) file. Program the faulty 74138 demultiplexer into the FPGA on your eSOC board. As you control the demultiplexer inputs with switches, complete the following function table. If the LED is on, that corresponds to logic high. The circuit programmed is identical to the circuit in problem 6. (10 points)

10. Compare the results of your table from the eSOC demultiplexer to that of the data sheet and identify what line(s) are incorrect. (5 points)

11. Open the Quartus II software and create a new project calledW5iLabmux. Using the VHDL editor, create a mutliplexer (shown below) based on the IF – THEN – ELSE statement. A note of caution is that some text editors add the smart quotes. Quartus will not recognize those quotes and you may get an error in your program. (6 points)

12. Open the Quartus II software and create a new project calledW5iLabdemux. Using the VHDL editor, create a demultiplexer based on the IF – THEN – ELSE statement. (6 points)

ECT 114 Week 4 iLab New

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ECT 114 Week 4 iLab New

1.Explain the operation of an encoder. (1 point) _It is a device that converts a weighted numeric input line to an equivalent digital code.

2.What does it mean when an encoder is a priority encoder? (1 point) _Logic establishes a rank order for inputs and always accepts the higher of multiple inputs.

3.Describe one practical application that uses encoder. (1 point) _A TV remote control or a 10key keypad.

4.Explain the operation of a decoder. (1 point) _It is a device that converts a digital code into a single output representing its numeric value.

5.Describe one practical application that uses a decoder. (1 point) _It is used in computers to handle operations with memory, or used to drive 7 segment displays, or used in applications that require the outputs to be in decimal form, such as calculators.

6.Search through datasheets for the 74148 device to find an application note that shows how to cascade two 74148 encoders to create one 16-to-4 line priority encoder. Draw the schematic for the 16-to-4 line priority encoder. (8 points)