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.
The sword in the sky. Savonarola was an ugly, violent man, prone to burning works of art. But for Botticelli, the prophet was a dark inspiration. The sword in the sky. Savonarola was an ugly, violent man, prone to burning works of art. But for Botticelli, the prophet was a dark inspiration. The two men in Sandro Botticelli's life could not have been more different. One was a collector of rare gems, a lover and a poet.