True or False: If the BUFFER amplifier symbol has a bubble at the output lead, it indicates that the input signal is inverted.

The statement is true because the presence of a bubble at the output lead of a BUFFER amplifier symbol indicates that the output is inverted relative to the input signal. In digital electronics, a BUFFER is typically used to maintain the same logic level without amplification; however, when a bubble is present, it signifies that the output is the logical complement of the input. This is a common convention in circuit diagrams to visualize how signals are processed through various components.

In the context of digital circuits, inversion typically means that when a high signal is input (logic '1'), the output will be low (logic '0'), and vice versa. Therefore, the presence of the bubble at the output serves as a clear visual cue to indicate this inversion effect. Understanding this convention is essential for interpreting circuit designs and functioning accurately in digital systems.