The TTL output stage is a rather complicated pushâpull circuit known as a totem-pole output (the transistors, diode, and resistor in the right-most slice of this TTL logic gate circuit). It sinks currents better than it sources current.
The theory for spontaneous generation refers to the idea that life can produced from nonliving things. Lazzaro Spallanzani proposed in his experiement that air was necessary for spontaneous generation.
Best Answer: It wasn't designed from any bird, it's actually a cullmination of the Pheonix (a mythical ancient bird) and an Eagle. And as someone else said, it's loosly called a (screamin' chicken). It's basically just a bird that a GM engineer (cannot remember his name) designed as a stand out focal point on the cars. The bird was actually started in 67' and grew from there on out into the lavish hood birds you've seen in the 70's and 80's.