Schematics use __________ to illustrate system functions.

Schematics use symbols to illustrate system functions because symbols provide a standardized way to represent various components and their relationships within a system. This use of symbols allows for clear communication of complex ideas, enabling technicians and engineers to understand the functionality and layout of systems quickly and effectively. Each symbol represents a specific component, such as resistors, capacitors, or switches, making it easier to follow circuit paths and understand how different parts interact within the overall design.

Using symbols is essential because it keeps diagrams concise and less cluttered than if they were drawn with pictures or detailed graphs. Additionally, symbols can be universally recognized across industries, making them an efficient tool for engineers and technicians who may deal with different systems or equipment. This standardized approach improves clarity and reduces the chance of misinterpretation when assessing or troubleshooting a system.