Today in lab 1 we will be testing the AND gate, OR gate,  and NOT inverter. We will use the bread board to create circuits using the schematics given. Our objective is to test logic gates by building a circuit and using integrated circuit packages containing gates..

For the prelab we had to search for the datasheets for all three logic gates, and go over notes and from the lecture and watching videos the professor uploaded for us prior to starting the lab.

When in the lab we must be sure to follow all rules and safety guidelines, especially when using the power supply. When we supply power using a dc power supply to our built circuit on the breadboard, we must be sure to turn of the power supply generator before touching any elements connected to breadboard. We also learned where the first aid kit is at; as well as food and drink rules. Last thing we learned was ask questions, when help is needed or if we need to find something or we broke something.

We built the circuit from figure 1 lab 1 sheet, we used the dc power generator to supply the breadboard with voltage, what we learned was that what we learned from the truth table of the NOT gate was actually true.  Below is the truth table for an inverter, and just like the circuit, when the switch was on an led light was one, then one the switch was off that led turns off and the other turns on. 

Once again using the schematics given in the lab, we created a circuit using 2 switches, 3 led lights and 2 resistors.  We used a 14 pin integrated circuit package containing four AND gates. With voltage going in the breadboard we learned that the truth table of an AND gate was accurate, meaning all the switches have to be on in order for the led lights to turn on. Any other combinations of switches being on and off did not turn the led lights on. The truth table below shows the outcome when using AND gates.

Using the same schematics as the AND gate part, we replace the gate with an OR gate on the breadboard, which then gave us what we expected from the truth table. Which is as long as one switch was on we had output, which turned our led light on, but with all switches equaling zero all led lights remained off. The truth table below shows the outcome of our circuit.

In conclusion, the lab provided me with familiarity with the equipment and where things are at. Also I learned that the integrated circuit package contains a number of  inputs to connect to it and how to connect power and ground to it correctly, because if there is no input then the switches do not work and the led lights either stay on or nothing works.