Dr. Starbuck gives an interesting, and it seems to me a true, account -- so far as conceptions so schematic can claim truth at all.
A specialized document type which provides an abstracted view of the functioning or operation of a thing or process which is otherwise not visible It may use a mixture of lines, boxes, numbers, arrows, circles and symbols to illustrate relationships of functions, movement of parts or directions
A schematic diagram or picture shows something in a simple way. This is represented in the schematic diagram below. showing the main parts of something in a simple way
Representation of electrical component as well as the connections using graphical symbols
A diagram which shows, by means of graphic symbols, the electrical connections, components and functions of an electrical system The components are represented by agreed-upon symbols, and the conductors connecting them by lines If two lines cross each other, a large dot represents a junction, whereas no dot represents no connection
Diagram of a functional electronic circuit composed of symbols of all active and passive elements and their interconnecting matrix that forms the circuit
a concise graphical system of connected symbols used to show the functional relationships of the parts of an electrical or mechanical component, and the components of a system
A variable that appears in an axiom schema and ranges over formulas, distiguished from the variables of the axiom schema that are quantified over and that range over the individuals of the universe of discourse