A Field Effect Transistor (FET) is a type of transistor that uses an electric field to control the flow of current.

Firmware is a specialized software programmed directly onto a hardware device.

Flux is a chemical cleaning agent used in the soldering process to remove oxidation from metal surfaces and improve solder flow.

An FTDI programmer is a device used to program and interact with microcontrollers using FTDI chips for USB-to-serial conversion.

Fused Deposition Modeling (FDM) is an additive manufacturing process that builds objects layer by layer using a continuous filament of thermoplastic material.