EECT 112 Lab Notebook

Md Muhaiminur Rahman

12/13/2018

Partner: Marco Vasquez

Index

 Lab 1: Logic Levels – Slide

 Lab 2: Number Conversions – Slide

 Lab 3: Logic Gates – Slide

 Lab 4: Describing Logic Circuits – Slide

 Lab 5: Two Input Gates – Slide

 Lab 6: Theorems – Slide

 Lab 7: Circuit Reduction (part 1) – Slide

 Lab 8: Circuit Reduction (part 2) – Slide

 Lab 9: 1 to 3 Clock Using JK Flip Flop and 555 Timer – Slide

Lab 1: Logic levels

8/30/18

Both simulated and

tested results for lab 1.

Lab 1

Multisim

Schematic for lab 1.

We simulated each

probe to measure the

voltage by turning on

and off 4 switches and

trying different

combinations.

Lab 1

Multisim

Schematic for lab 1.

We simulated each

probe to measure

the voltage by

turning on and off 4

switches and trying

different

combinations.

Lab 1

Multisim

Schematic for lab 1.

We simulated each

probe to measure

the voltage by

turning on and off 4

switches and trying

different

combinations.

Lab 1

Multisim

Schematic for lab 1.

We simulated each

probe to measure

the voltage by

turning on and off 4

switches and trying

different

combinations.

Lab 1

Pictures

Lab 1

Pictures

Lab 1

Pictures

Lab 1

Observation

We observed that the data were not accurate because the switches have

their own resistance. In addition, none of the resistors were exactly 10K in value

compared to the simulation. We used a multi-meter for testing so the data

were not exactly the same as simulated. This is also because multi-meter uses

DC voltage to measure. Whereas, we used probes to measure the voltage in

our simulation. Did not face any issues while testing the circuit.

Lab 2: Number conversion

09/06/18

Both simulated and

tested results for lab

Lab 2

Excel Files

Lecture 2a Slide 3 Lecture 2a Slide 6 Lecture 2a Slide 7

Lab 2

Excel files (continued)

Lecture 2a Slide 9 Lecture 2a Slide 12

Lab 2

Excel files (continued)

Lecture 2a Slide 14

Lecture 2a Slide 18

Lab 2

Observation

 We observed that decimal, binery, and hexadecimal values can all be

converted to each other by using certain formulas.

Lab 3: Logic Gates

09/13/18

Both simulated

and tested

results for lab 3.

Lab 3

Multisim

Schematic with 74LS08N

Schematic with 74LS32N

We also tried different combinations by turning the switch on and off to measure different

voltages.

Lab 3

Pictures

Lab 3

Observation

 We observed that the data were not accurate because the switches have

their own resistance. In addition, none of the resistors were exactly 10K in

value compared to the simulation. We used a multi-meter for testing so the

data were not exactly the same as simulated. Did not face any issues while

testing the circuit.

Lab 4: Describing Logic Circuits

09/27/18

Both simulated and

tested results for

lab 4.

Lab 4

Multisim

Schematic with 74LS08 before 74LS32. Schematic with 74LS08 before 74LS32.

We also tried different combinations by turning the switch on and off to measure

different voltages.

Lab 4

Pictures

Lab 4

Pictures

Lab 4

Pictures

Lab 4

Observation

 We observed that the data were not accurate because the switches have

their own resistance. In addition, none of the resistors were exactly 10K in

value compared to the simulation. We used a multi-meter for testing so the

data were not exactly the same as simulated. The circuit was supposed the

give either 5V or 0V as the data. We got 0.14/0.13V or 4.48/4.47V. Did not

face any issues while testing the circuit.

Lab 5: Two Input Gates

10/04/18

Both simulated

and tested results

for lab 5.

Lab 5

Multisim

Schematic of lab 5.

We used 74LS04, 74LS08, 74LS32,

and 74LS86. We tried different

combinations of turning the

switch on and off to see by

using which combinations we

get an output.

Lab 5

Pictures

Lab 5

Pictures

Lab 5

Pictures

Lab 5

Pictures

Lab 5

Observation

 We observed that the data were not accurate because the switches have

their own resistance. In addition, none of the resistors were exactly 10K in

value compared to the simulation. We used a multi-meter for testing so the

data were not exactly the same as simulated. We ran our test like if we got

an output close to 5V we knew that trying that specific combination with

the switch gave us an output. Otherwise we determined that, there was

output on the other combinations. Did not face any issues while testing the

circuit.

Lab 6: Theorems

11/01/18

Both simulated and

tested results for lab 6.

Lab 6

Multisim

Schematic of lab 6. Theorems 1-

8. We used 74LS04, 74LS08,

74LS32. We tried different

combinations of input to see by

using which combination we get

an output.

Lab 6

Multisim

Schematic of lab 6. Theorems 13a.

We used 74LS08, 74LS32. We tried

different combinations of switches to

see by using which combination we

get an output.

Lab 6

Multisim

Schematic of lab 6. Theorems 13b.

We used 74LS08, 74LS32. We tried

different combinations of switches

to see by using which combination

we get an output.

Lab 6

Multisim

Schematic of lab 6. Theorems 14,

15a, and 15b. We used 74LS04,

74LS08, 74LS32. We tried different

combinations of switches to see

by using which combination we

get an output.

Lab 6

Multisim

Schematic of lab 6. Theorems 16.

We used 74LS04, 74LS08, 74LS32.

We tried different combinations

of switches to see by using which

combination we get an output.

Lab 6

Multisim

Schematic of lab 6. Theorems 17.

We used 74LS04, 74LS08, 74LS32. We

tried different combinations of

switches to see by using which

combination we get an output.

Lab 6

Pictures

Lab 6

Pictures

Lab 6

Pictures

Lab 6

Observation

 We observed that the data were not accurate because the switches have

their own resistance. In addition, none of the resistors were exactly 1K in

value compared to the simulation. We used a multi-meter for testing so the

data were not exactly the same as simulated. By trying different

combinations we could determine when the circuit was giving an output

and when it was not. We could also proof that the theories worked the way

it should when we tested them. Did not face any issues while testing the

circuit.

Lab 7: Circuit Reduction (part 1)

11/08/18

Both simulated and

tested results for lab 7.

Lab 7

Multisim

Schematic of lab 78. We used

74LS04, 74LS08, 74LS32. We

tried different combinations

of input to see by using which

combination we get an

output.

Lab 7

Pictures

Lab 7

Observation

 We observed that the data were not accurate because the switches have

their own resistance. In addition, none of the resistors was exactly 10K in

value compared to the simulation. The switches were inverted because the

resistors was pulling their own current so the data were backwards. We

used a multi-meter for testing so the data were not exactly the same as

simulated. Although, our data were correct after trying different

combinations. We knew that because when it was supposed to give us an

output we got it. Did not face any issues while testing the circuit. However,

while figuring out the Karnaugh’s Map, we did face some issues. Such as, it

took us time to figure out how to complete the table and how to figure out

the SOP and POS form equations. Later we went through the book and

figured out how to do it.

Lab 8: Circuit Reduction (part 1)

11/15/18

Both simulated and

tested results for lab 8.

Lab 8

Multisim

Schematic of lab 8. We used

74LS04, 74LS08, 74LS32. We tried

different combinations of input to

see by using which combination

we get an output.

Lab 8

Pictures

Lab 8

Observation

 We observed that the data were not accurate because the switches have

their own resistance. In addition, none of the resistors were exactly 10K in

value compared to the simulation. The switches were inverted because the

resistors was pulling their own current so the data were backwards. We tried

different combinations and used a multi-meter for testing so the data were

not exactly the same as simulated. At first we put 74LS08 in place of 74LS32,

and because of this we were different getting results compared to the

simulation. However, we fixed it and ran the circuit once again. Hence, we

the correct results.

Lab 9: 1 to 3 Clock Using JK Flip Flop

and 555 Timer. 11/29/18

Simulated results for lab

Lab 9

Multisim

Schematic of lab 9. We

used LM555CM, 74LS73. We

tried different combinations

of input to see how your

graph on the oscilloscope

changes.

Lab 9

Multisim

Test by which we determined the time.

Lab 9

Pictures

Lab 9

Pictures

Lab 9

Observation

 We observed that the data were not accurate because the switch have

their own resistance. In addition, none of the resistors were exactly 470K in

value compared to the simulation. This time we used an oscilloscope for

testing our circuits to check if we got similar results compared to our

simulation. It actually took two lab times to figure out the circuit. At first, our

circuit did not show similar to the simulated one. This is because we had

some of the wires in the wrong place of the LM555CM which eventually did

not have any connection to the circuit. Thus, no output. However, we

switched it up and rebuilt the circuit and it worked the second time.