What is one primary function of a transistor?

The primary function of a transistor is to act as an amplifier. Transistors are semiconductor devices that can control and amplify electrical signals. When a small input current is applied to the base terminal of a transistor, it allows a larger current to flow between the collector and emitter terminals. This property enables transistors to amplify audio signals in radios, for instance, or to switch signals in digital circuits, making them fundamental components in various electronic devices.

In terms of design technology, understanding how transistors work is crucial, as they form the basis for modern electronic circuits. Their ability to control current flow and amplify signals is utilized in everything from simple electronic projects to complex computing systems.