How is a crystal oscillator represented in TPC schematics?

In TPC schematics, a crystal oscillator is represented by a rectangular shape. This representation is widely accepted because it clearly differentiates the crystal oscillator from other components. The label that includes the frequency is crucial because it indicates the specific operating frequency of the oscillator, which is essential for understanding the function of the circuit.

The rectangular shape conveys a straightforward visual cue about the component, which helps in identifying its role within the schematic. In addition, the frequency label provides necessary information for engineers and technicians to ensure that the right oscillator is utilized for the intended application, directly impacting the performance and stability of the circuit in which it is used.