Not sure what you are checking, but a transistor has two junctions. Think of a three layer cake with chocolate on the bottom layer, vanilla in the middle and chocolate on the top. The junctions are where the chocolate and vanilla meet.
There are 31 Junctions on the M25
There are two semiconductor junctions. Transistors are designated as NPN or PNP and a diode is an NP or PN junction depending on direction of current flow. However, the function of a transistor is different than two back to back diodes.
Integrated circuits (in many microprocessor integrated circuits) containing many billions of transistors each.
758 Million transistors.
6
millions and more
About 5000.
normally 2300
4billion
ICs have been built with as few as two to as many as hundreds of billions of transistors. I believe the first germanium prototype IC built by Kilby may have had only one transistor (it was an integrated circuit not for having many transistors, but because it integrated both resistors and transistors into a single germanium crystal).
A modern micro processor has atleast 100 million transistors. The Core i7 920 (D0 stepping) has approximately 781 million transistors.
Billions.