Before revision: Multiple-emitter transistors replace the diodes of diode–transistor logic , and allow reduction of switching time and power dissipation.Jacob Millman, Microelectronics: Digital and Analog Circuits and Systems, McGraw-Hill, 1979 , pp .106-107Douglas .
After revision: Multiple-emitter transistors replace the diodes of diode–transistor logic (DTL) to make transistor–transistor logic (TTL),Bipolar-Junction (BJT) transistors – UCSD ECE65 class notes and thereby allow reduction of switching time and power dissipation.Jacob Millman, Microelectronics: Digital and Analog Circuits and Systems, McGraw-Hill, 1979 , pp .