1)Setting Up A Breadboard with a Microcontroller， I used the components: a solderless breadboard with two rows, 4 flexible jumper wires and a an Arduino Nano.
2)A LED circuit
I used 4 jumper wires, a LED and a 560 ohm resistor and an arduino nano to set up a circuit. After I connect the energy, the LED light.
3)Two LED with a switch circuit
Since the breadboard is so hard to press. i made several failures at the beginning. but in this exercise i finally find out that the way switch works.
4)Two switches in series
I try connecting two switches in series and if i want the LED light up. i need to press the two switches in the same time.
