Explain any two final sub-circuit?

1. Comparator sub-circuit: A comparator sub-circuit is a type of circuit that compares two input voltages and produces an output based on the comparison. The output of the comparator is typically a digital signal indicating whether one input voltage is greater than the other. This sub-circuit is commonly used in applications such as voltage level detection, signal conditioning, and control systems.

2. Oscillator sub-circuit: An oscillator sub-circuit is a circuit that generates a periodic waveform, such as a sine wave, square wave, or triangle wave. Oscillators are commonly used in electronic devices to provide a stable clock signal for timing purposes, as well as in audio applications for generating tones and frequencies. There are various types of oscillators, including LC oscillators, crystal oscillators, and relaxation oscillators, each with its own unique characteristics and applications.