The standard is intended to symbolize the binary control functions of a system in a manner that can be applied to any class of hardware, whether it be electronic, electrical, fluidic, pneumatic, ...

Variable resistor RV1 is used to control the BASS, RV2 is used to control the Treble and RV3 is used to control the Volume. Resistor R7 gives the isolation between Bass and Treble. To operate the ...

He's right. A Venn diagram is meant to show the overlap between two groups of things -- ideally, to scale. One problem with the Clinton diagram, for example, is that "gun owners" in this context ...