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These circuits use nMOS for implementation of a whole gate + one pMOS which is connected between positive supply and nMOS.

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โˆ™ 2012-11-21 07:52:45
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Q: What is the use of pseudo nMOS gates in digital design?
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What is a NMOS PLA?

NMOS PLA is a Programmable Logic Array which is designed by employing NMOS technology i.e. by employing nmos transistors to realize the required gates of PLA. PLA is a combination AND gates and OR gates to produced sum of products terms needed for realizing the required combinational logic. It consists of an array of AND gates followed by OR plane. the connections to the AND and OR inputs can be programmed based on our needs.


What is the difference between cmos and nmos?

CMOS and NMOS are two logic families. As the name itself indicates, CMOS is complementary Metal Oxide Semiconductor technology. It uses both PMOS and NMOS transistors for design. Whereas, NMOS logic family uses only NMOS FETs for design.


What has the author A C Foster written?

A. C. Foster has written: 'The design of a writeable programmable logic array in nMOS technology'


What are the Disadvantages of cmos over pmos and nmos?

CMOS is Complementary Metal Oxide Semiconductor technology. It is widely used logic family for implementing digital logic. CMOS uses both PMOS and NMOS transistors within it. The advantage is speed but the disadvantage is power consumption.


What are the Advantages of cmos over pmos and nmos?

* reduce the complexity of the circuit* low static power consumption* high noise immunity* high density of logic function on a chipThe most important advantage of CMOS is the very low static power consumption in compare with NMOS technology. On the other hand, CMOS technology is more complex to fabricate then NMOS technology, so it is more expensive. However, almost every todays digital circuits are CMOS. You want to use NMOS only when you want to fabricate fast and low-cost a simple circuit. The most important advantage of CMOS is the very low static power consumption in compare with NMOS technology. On the other hand, CMOS technology is more complex to fabricate then NMOS technology, so it is more expensive. However, almost every todays digital circuits are CMOS. You want to use NMOS only when you want to fabricate fast and low-cost a simple circuit.


What are the differences between nmos and pmos transistors?

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).


What is NMOS in electronics?

when n- channel mosfets are used to construct a circuit these are called nmos(N- channel mosfet).


Is cmos a combination of both nmos and pmos?

yes


What are the advantages of CMOS over TTL circuit?

The major advantage of CMOS over previous digital logic families (NMOS, TTL, RTL etc.) is that CMOS has almost no static current. Since CMOS only draws power during a transition, low-power devices -- such as wristwatches -- typically use CMOS at low transition rates (lower losses). Even devices that run at very high speeds often have lower power consumption with CMOS than other digital logic families, because typically only a few gates make a transition at a time -- the vast majority of gates that don't transition save more than enough energy to make up for the few gates that transition and briefly consume more energy than TTL gates.


What are the advantages of CMOS inverter over nMOS inverter?

Cmos inverter has very less power consumption when it is idle where as nmos inverter still consume power when idle.


What happens if you interchange pmos and nmos in a cmos inverter?

it becomes a buffer


Why p substrate is used in nmos?

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