Radio Frequency refers to the range of electromagnetic waves with frequencies from 3 kHz to 300 GHz.

A compact, single-board computer developed by the Raspberry Pi Foundation.

A Real-Time Clock (RTC) is a computer clock that keeps track of the current time and date, integral to maintaining time during system power-off.

A regulator is a device designed to maintain a constant output of a specified parameter despite variations in external conditions.

An electrically operated switch that uses an electromagnet to mechanically operate a set of contacts.

A storage location for digital data and files, often used in software development for version control.

The opposition to the flow of electric current, typically measured in ohms (Ω).

A resistor is a passive electrical component that implements electrical resistance as a circuit element.

A component in a PC cooling system that transfers thermal energy from the coolant to the air.

RAM is a type of computer memory that allows data to be accessed directly in any order.

RGB is a color model used in electronic displays to represent a wide range of colors by varying the intensity of red, green, and blue light.

A reservoir in PC cooling systems is a component that stores additional coolant fluid.

A Return Merchandise Authorization (RMA) is a formal approval to return a product to the manufacturer or supplier for repair, replacement, or refund.

Riser cable is a type of electrical cable designed for vertical distribution and riser applications in buildings.