On the top left there is a transistor, on the top right there is resistor, and on the bottom middle there is an LED.

This is the breadboard. All the components are put on the board and there has to be a powersource attached on it for the LEDs to work. In our case we used a battery of 6V.

This is a circuit. To make it work we used a transistor, and two LED lights. We connected the negative to the transistors collector using the red wire. Then we connected both LED lights to the positive side and to the emitter and base of the transistor. Once the power was connected, we knew the circuit was working because the LEDs were on.

This is an AND gate. This gate only works if the two of the LEDs were on. If only one was one then the LED indicating the gate to be true wouldn't turn.

This is an OR gate. This gate works if either LED is on or if both are on. This is different from the AND gate because it doesn't matter which LED is on or if only one is on.

This is blinker we soldered together. By soldering we were making a permanent connection. We followed the instructions on the back of the blinker. If we didn't solder correctly, then the blinker didn't function.

These are an example of an AND gate (left) and an OR gate (right). They are the same as what we built on the breadboards, but these are a simpler representation of them.

This is a NAND gate. A NAND gate is the opposite of an AND gate. It only works when not both inputs are on. Input A or B are on for it to work or both of them are off.

These are both examples of NOR gates. The top one has a built in inverter where as in the bottom one has an OR gate and an inverter added to the circuit. They both function the same. This gate works the opposite of an OR gate. It only works when both inputs are off.

The XOR gate is exclusively OR. This gate only functions when either of the inputs is on. It doesn't work when both inputs are on or off. In order to build one we used an OR gate(top left), an AND gate(middle right) and a NAND gate(bottom left).

The circuit above is known as a flip-flop. The reason it is a flip-flop is because it is stable in two states and is able to remember the state it was on. The one we built is a basic computer memory.