Electronics

Electronics are here to stay! I bet you can think of a lot of things that are electronic such as computers, mobile phones, DVD players and games consoles. Grocery stores, hospitals, airports and schools are full of electronic devices. **VIDEO/PPT/IMAGES** What makes a device electronic? It is not just because it uses electricity!!! It is only electronic if certain electronic components are used to control the movement of electricity through electronic circuits. Understanding electronics and how electronic devices work may seem daunting but by breaking electronic devices down into simple system or block diagrams and considering the **Input, Process, and Output** we can begin to understand how these devices work, and by taking a closer look at the components used, and their function can we begin to understand how the electronic world around us works.
 * What are electronics?**

At this point you might be asking yourself what is electricity? **VIDEO/PPT/IMAGES** Power** Ohm's Law defines the relationships between (P) power, (E) voltage, (I) current, and (R) resistance. One ohm is the resistance value through which one volt will maintain a current of one ampere.
 * Voltage**
 * Current**
 * Resistance

( I ) [|Current] is what flows on a wire or conductor like water flowing down a river. Current flows from negative to positive on the surface of a conductor. Current is measured in (A) amperes or amps.

( E ) [|Voltage] is the difference in electrical potential between two points in a circuit. It's the push or pressure behind current flow through a circuit, and is measured in (V) volts.

( R ) [|Resistance] determines how much current will flow through a component. [|Resistors] are used to control voltage and current levels. A very high resistance allows a small amount of current to flow. A very low resistance allows a large amount of current to flow. Resistance is measured in ohms.

( P ) [|Power] is the amount of current times the voltage level at a given point measured in wattage or watts.


 * Electronic Components || Resistors || Capacitors || Power Supplies ||
 * Ohm's Law || Diodes || Building a Circuit || Soldering ||