The breadboard is a board used for creating temporary prototypes and experimenting with circuit designs. Prototyping is the process of testing out an idea or creating a model from which other forms are developed. The aim of this instructible is not to give you a complete guide on breadboard but to show you the basics.
The breadboard is made up of two major parts, the power strips and the component strips. The power strips consists of two rows. The first one for negative power supply and the second for the positive power supply. Each of the rows are connected together horizontally in 5’s.
A resistor is a two terminal component that resists the flow of current. They are a passive component i.e they can only consume power and not generate it. Usually they are used to limit the current flowing through other components. For example If we connect a Light emitting diode (LED), to a battery it would burn outrightly because the battery would allow a large amount of current to flow through the LED, this can be avoided if we put a resistor between the LED and the battery. We can calculate the resistance of a resistor using the Ohm’s law V=IR. Usually we calculate the resistance by reading the color bands of the resistor or by measuring it with a multimeter. Each strip of color on the resistor represents a specific digit. Different colors corresponding to their digit values are shown in the image below