Ken Youssefi. UC Berkeley. 2. Types of Electronic Diagrams . Schematic DiagramsUsing graphic symbols, shows the electrical connections andfunctions of a specified circuit arrangement.Wiring DiagramsRepresents the actual wiring between component devices inelectrical equipment. Shows internal or external connections, orboth. Wiring Harness Diagram Logic DiagramsShows logic gates and components.Printed Circuit Board Drawing (PCB)PC boards replace hand-wiring manufacturing methods. .