What is the function of transistors

A transistor has a base, a collector and an emitter. The base controls an electrical gate, the collector is a larger electrical supply current and the emitter is the output for that supply. Varying the electrical current from the base allows for regulation of the current flowing through the gate from the collector and outputted by the emitter. This is a transistor functioning for amplification.

When functioning as a binary switch, the identical control-gate/output process is used. The difference is that for the gate to be open (binary digit one), it cannot figuratively be ajar as within the amplification function, a 5-volt threshold is required. Anything less than 5 volts received from the base means the gate is closed (binary digit zero). This transistor function is fundamental to all digital processing.

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