Power in electronic devices is defined as the conversion of electrical energy of power supply to heat. Equation 5.1 represents the power dissipation in electric circuits.
V = Voltage (Joules/Coulomb or Volts)
I = Current (Coulombs/Sec or Amperes)
P = Power (Joules/Sec or Watts)
Now let's look at dissipation in Complementary Metal Oxide Semiconductor (CMOS) devices. CMOS technology is the best choice for low-power designs because of its insignificant static power dissipation. However, simply selecting CMOS technology should not be considered as the only method for reducing power in ASIC/SOC devices.