Voltage-
Electrical potential difference expressed in volts.

Current-
A flow of electric charge.

Resistance-
The opposition offered by body to the passage through it of a steady electric current.

Circuit-
The complete path of an electric current including usually the source of electric energy.

Transistors-
A solid-state electronic device that is used to control the flow of electricity in electronic equipment and usually consists of a small block of a semiconductor with at least 3 electrodes.

L.E.D.s-.
Light Emitting Diodes form the numbers on digital clocks, sent data from remote controls and light up traffic signals.

Capacitor-
A device giving capacitance and usually consisting of conducting plates or foils separated by thin layers of dielectric with the plates on opposite sides of the dielectric layers oppositely charged by a source of voltage and the electrical energy of the charged system stored in the polarized dielectric.

Resistor-
A device that has electrical resistance and that is used in an electric circuit for protection, operation, or current control.

Switch-
A device for making, breaking, or changing the connections in an electrical circuit.

Digital Electronics-
Digital electronics represent signals by discrete bands of analog levels, rather than by a continuous range.

Integrated Circuit-
A complex set of electronic components that are on a tiny slice of semi-coding material.

Binary Code-
It's a language of computers with 0's and 1's.

Circuit Breaker-
A switch that automatically interrupts the current of an overloaded electrical circuit.

Conductor-
A material or object that permits and electric current to flow easily.