Circuit symbols are used because they convey in the most elemental manner what a component does, not what it looks like. Components have thousands of variations in packaging; the reader is not interested in what the actual part looks like, but how it works with other circuit elements to form a circuit.
Why are circuit symbols used?
Circuit symbols are used in circuit diagrams showing how a circuit is connected together. … To build a circuit you need a different diagram showing the layout of the parts on breadboard (for temporary circuits), stripboard or printed circuit board.
