اخوانا الكرام ارجو شرح الاختصار Vcc وما معناه ،،، وشكرا

السلام عليكم

History
VCC (note: lower case is sometimes used instead of subscript, e.g. "Vcc") is an electronics designation that refers to voltage from a power supply connected to the "collector" terminal of a bipolar transistor. In an NPN bipolar junction transistor, it would be +VCC, while in a PNP transistor, it would be -VCC. There is debate over the origins of the double letter subscript naming convention. One proposal is that it originated as an abbreviation of the supply voltage for a common collector amplifier with the other power supply names mimicking this fashion. Double letters may also have been used to clearly indicate that a power supply voltage is being referred to.

In general, double letter subscripts refer to power supply voltages. For example, VEE refers to the "emitter" voltage as supplied by the power supply pin. In NMOS logic, VSS refers to the "source" voltage, and VDD is the "drain" voltage likewise.

Within a circuit, single letter subscripts refer to that voltage relative to ground; for example, VC is the "collector" voltage relative to ground. Two different letters indicate the voltage between two terminals; for example: VBE is the "base" to "emitter" voltage drop, while VCE is the "collector" to "emitter" voltage.

و شكرا

شكرا يااخى على الشرح الوافى ،،،،، وعذرا على التأخير فى الرد