info about transistors

  • 2 types of silicon
    • p-type silicon: positive free-carriers (holes)
    • n-type silicon: negative free-carriers (electrons)
  • 2 types of transistors
    • p-transistor: Gate (- charged), generates electric field that creates a (+ charged) p-type channel connecting sources & drain
    • n-transistor: Gate (+ charged), generates electric field that creates a (- charged) n-type channel connecting sources & drain

CMOS

  • Complementary Metal-Oxide Semiconductor (CMOS)
  • use both p- & n-type transistors