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Why is not NAND gate preferred over NOR gate for fabrication?
In general, cells are designed to have similar drive strength of pull up and pull down structures to have comparable rise and fall time. NAND gate has better ratio of output high drive and output low drive as compared to NOR gate. Hence NAND gate is preferred over NOR.
Why NAND is preferred over NOR in logic design at least three reasons?
The reasons given online say: NAND has lesser delay than Nor due to the NAND PMOS (size 2 and in parallel) when compared to NOR PMOS (size 4 in series). According to my understanding delay would be the same.
Why NAND and NOR gates are more popular what are they commonly known as?
NAND and NOR gates are more popular as these are less expensive and easier to design. Also other functions NOT AND OR can easily be implemented using NAND/NOR gates. Thus NAND NOR gates are also referred to as Universal Gates.
What is better NAND or NOR?
NOR flash is faster to read than NAND flash, but it’s also more expensive and it takes longer to erase and write new data. NAND has a higher memory capacity than NOR. NAND memory devices are accessed serially, using the same eight pins to transmit control, address and data information.
What is the Speciality of NAND and NOR gates?
The specialty of NAND and NOR gates is that they are universal gates and can perform all the basic logical operations.
Which of following are known as universal gates a NAND & NOR B and & OR C XOR & OR d ex NOR & XOR?
The logic gates which are derived from the basic gates like AND, OR, NOT gates are known as derived gates. XOR and XNOR are the derived gates. A universal gate is a gate that can implement any Boolean function without the need to use any other gate type. NAND and NOR gates are universal gates.
Is NAND or NOR faster?
Although in NAND gate pmos are in parallel and in NOR they are in series, so NAND gate is faster than NOR.
Which type of logic is mostly used NAND based or NOR based?
Both NAND and NOR are classified as universal gates, but we see that NAND is preferred over NOR in CMOS logic structures. Let us discuss why it is so: We know that when output is at logic 1, pull up structure for the output stage is on and it provides a path from VDD to output.