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A1 - Building an AND Gate Circuit

Small chips, known as integrated circuits, and be purchased for use on a breadboard that contain digital components. They look like this:

The one we're using in this assignment is the 74HC08 chip, which contains four AND gates. Each integrated circuit contains a number of pins, and they have associated datasheets explaining what each pin is for.

Here is the datasheet for the 75HC08 chip:

These chips generally operate at 5 volts. To use AND gate #1 in this chip, we need to make the following connections:

  • Pin 14 connects to the positive terminal (5+ or Vcc)
  • Pin 7 connects to the negative terminal (ground)
  • Pin 1 connects to the positive terminal to represent an input of 1, or to the negative terminal to represent an input of 0
  • Pin 2 works the same as Pin 1
  • Pin 3 is the output - it should be connected to some sort of output indicator like an LED, and then from there to the negative terminal

When building these circuits in Tinkercad, you'll need to choose All in the dropdown box above the components menu. In there, you'll find the 74HC08, and you'll also find a component that can produce 5V that looks like this:

Your Task

Part 1

Build the following circuit in Tinkercad:

Try to make it look nice so it's easy for someone else to make sense of!

Part 2

Build the same circuit on a project board, but instead of using switches, you can toggle the inputs by just moving the wires between the positive and negative bars on the breadboard.