Integrated Circuits:-

•  An Integrated Circuit (IC) is a modern device filled with miniaturized electronic components.
• The electronic components in an IC are sealed inside on a tiny "micro-chip". Fine wires connect the microchip to metal pins along the edge of the IC. These pins are numbered as shown in the image below.

                                 

     555 LED Flasher:-

components used:-

• R1 - 100K Ohms
• R2 - 33k Ohms
• R3 - 330 Ohms
• C1 - 10 uF
• IC1 - 555 Timer
• +V    4.8 volts

To avoid overheating of wires and damage to components we suggest using a resistor in series with your power supply.  we can use 9volts battery . This configuration delivers enough current to drive any of these projects but limits current in case of a short circuit.