The flow of charge through nonmetal conductors is known as Electronics. Though, the flow of charge through metal conductors is known as electrical. For instance, flow of charge through copper which is a metal and would fall under electrical category; whereas the flow of charge through silicon which is not a metal, would come under electronics. This basic distinction was introduced by Lee De Forest of the triode in the year 1906. Electronic engineering is the study of design and construction of electronic circuits to solve practical problems. The primary purposes of electronic components is to affect the electrons in a desired manner in relation to the function of the electronic system. Generally, these components are either packaged singly or in more complex groups as integrated circuits. Capacitors, transistors, resistors are some of the common examples for electronic components.

Electronic circuits are mainly of two types:

• Analog Circuits: It uses a continuous range of voltage in appliances like radio receivers. They are also known as linear circuits. These days, certain analog circuitry use digital or microprocessor techniques to enhance the basic performance of the circuit.
• Digital Circuits: They are mainly based on a number of discrete voltage levels. Some of the equipments that are constructed on the basis of digital circuits are electronic clocks, computers and Digital signal processors.

• Electronics
• Electrical engineering
• Analog signal processing

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