NMOS is built with n-type source and drain and a p-type substrate, while PMOS is built with p-type source and drain and a n-type substrate. In a NMOS, carriers are electrons, while in a PMOS, carriers are holes. When a high voltage is applied to the gate, NMOS will conduct, while PMOS will not. Furthermore, when a low voltage is applied in the gate, NMOS will not conduct and PMOS will conduct. NMOS are considered to be faster than PMOS, since the carriers in NMOS, which are electrons, travel twice as fast as holes, which are the carriers in PMOS. But PMOS devices are more immune to noise than NMOS devices. Furthermore, NMOS ICs would be smaller than PMOS ICs (that give the same functionality), since the NMOS can provide one-half of the impedance provided by a PMOS (which has the same geometry and operating conditions).
A pullup can be considered a kind of diaper The main difference between a pullup and a normal diaper is that a pullup can be easily pulled on and off in the manner of normal underwear. Additionally, many pullups don't hold as much urine as a normal diaper.
true
Preferred Provider Network
nowhere
PMOS - (drain + source) = p-type doping NMOS - (drain + source) = n-type doping :)
yes
PPO stands for Preferred Provider Organizations, which means that usually there is a network of healthcare providers that are preferred and will be covered by your insurance (in-network). You are always able to see a healthcare provider that is not a preferred provider, although the coverage may not be 100%. Your plan will dictate how your insurance covers you for "out-of-network" providers.
because pmos has low mobility . the inverter threshold voltage can be shifted to the middle and the inverter is more symmetrical in terms of transistor times.
A strong pullup means using small value resistor for pull up whereas a weak pullup means using high value resistor for pulling the signal to Vcc. A strong pullup reduces the RC time constant. Soumen C
it becomes a buffer
USB bus