Lab 1

Objectives

The objectives of this lab are threefold:

1. You will organize you EE 260 team.

   • Teams are assigned for two reasons.

     • The first is for you to get to know some of your classmates

     • If you have a question and you TA is already working with another student or group, you should ask your Team first. While you are waiting, you may find a solution to your problem. If you do not, try to make sure the question you are asking is clear so the TA can help you quickly.

2. You will learn to convert boolean equations to circuits in Falstad.

Prelab

1. Read this handout before coming to lab.

Team Formation

The purpose of this task is to meet with your teammate for the semester and decide among yourselves the details of how your team will operate.

Falstad Tutorial

One of the most valuable skills for an engineer to develop is being able to pick up a new software tool and learn enough on your own to begin using it.

The objective of this part of the lab is to become familiar with using the Falstad Circuit Simulator. Please download if you have not done so yet. You can find links on the Syllabus.

• Whatch this tutorial on Youtube.

Although this is not the Basic Circuits class, the techniques to draw wires and elements will be useful.

• Become Familiar with the following Menu Items

  • Circuits > Blank Circuit (Clears the screen for a new circuit)

  • Draw > Wire (Draws Wires on your screen)

  • Logic Gates, Input and Output > Add AND Gate (Draws an AND Gate)

  • Logic Gates, Input and Output > Add OR Gate (Draws an OR Gate)

  • Logic Gates, Input and Output > Add Inverter (Draws an Inverter)

• Other important ones you will need in this lab

  • Outputs and Labels > Add Text (Allows you to add text like Labels)

  • Passive Components > Add Switch (Can be used to simply break or open a circuit when clicked)

• The Rest In Bold Below is probably important. You should try it out. It's an easy mode to implementing inputs and outputs.

  • Logic Gates, Input and Output > Add Logic Input ( easy mode - Toggles High and Low by clicking)

  • Logic Gates, Input and Output > Add Logic Output (easy mode - Outputs HIGH or LOW)

Draw 4 more circuits

For all the problems below.

1. • First Draw the Truth Table for the Circuit. This should include all the possible combinations of inputs. (How many inputs do you have? How many outputs do you have?)

   • Use AND, OR, and NOT (inverter) Gates to implement the following functions. Make sure the AND and OR gates are only 2 input gates. You can use a combination of 5v sources and switches to test all the combinations of inputs.

   • Clearly Label all inputs and Outputs with the right variables

   • If I were you, I would use the easy mode methods above as it makes design a lot easier.

1. W = A' + (BC)'

2. X = A + B + C'

3. Y = AB' + C'D

4. Z = ABC' + AB'C + A'BC

What You Turn In

• All truth tables you used in this Lab

• Screenshots of all of the circuits you made in this lab.

• Make sure to submit it in a single PDF labeling all drawings and truth tables appropriately.