Background 

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            There are many complex components that were used in this project. All of the components used were very important to the final design of this project. This project incorporated a vast number of materials including microphones, scrap metal, bread boards, the BOE system with the BS2 chip and many other electrical components such as the LM386 and ADC0831 chips, potentiometers and the PNP and NPN transistors.
            Transistors are used to switch on and off the flow of current. Transistors are semiconductors, with three leads. Each lead has a purpose, there is a collector lead, emitter lead, and base lead. There are two different types of transistors, the PNP type and the NPN type. With a transistor, a little bit of current at the base will allow lot of current to flow from the collector to the emitter.