Electrical Engineering and Electronics

Electrical engineering is the practical application of electricity to create new tools and devices.


Term Definition
Analog-to-Digital Converter (ADC) A converter that changes an analog signal to a digital signal.
Baud Rate The number of bits per second that can be sent over a serial connection
Digital Pin A type of pin that can only be in an "on" or "off" state.
Digital to Analog Converter (DAC) A converter that changes a digital signal to an analog signal.
Electrical Contact An electrical circuit component that consists of a conductive material (typically metal) that, when touched to another contact, can pass an electrical current.
Electrical Load The portion of a circuit that uses electrical power
Electrical Signal An variation in voltage or current frequency, phase, or duration used to represent information
Pin A type of electrical contact in which the connection is designed to be pressed together (i.e. a plug) to form a reliable, low-resistance connection.
Power Supply Av electrical device that supplies power to a circuit
Serial Port An interface through which an electrical signal is transferred sequentially, one bit at a time
Two Wire Interface (TWI) A communication protocol consisting of a data line and a clock line.


  • Red wires are typically used for power and connect to positive terminals
  • Black wires are typically used for ground and connect to negative terminals
  • Other colors are typically used for electrical signals

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