Which is hard, circuits or signals and systems

Electric circuits and signals and systems are each difficult.

1, Circuits focuses on basic concepts such as current, voltage, resistance, and how they flow and are distributed in various circuit elements. The study of circuits requires an understanding of basic physical principles such as Ohm's law, Kirchhoff's law, etc., as well as an understanding of the various types of circuits and how they work.

2. Signals and systems, on the other hand, focuses on the spatial and temporal properties of signals and how these properties are altered by the system. The study of signals and systems requires a strong mathematical foundation, including, but not limited to, Fourier transforms, Laplace transforms, and Z-transforms.

3, the circuit is the path through which the current passes, also known as a loop or network, is an electrical device consisting of electrical equipment and components connected in a certain way to achieve a specific function, the role of the circuit is mainly the transmission and conversion of electrical energy, a complete circuit consists of a power supply (or a signal source), the load and the intermediate links (eg, switches, wires, etc.) of the three basic parts.