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Biotechnology and Biomedical Engineering
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Digital VLSI Design Virtual lab
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Logic Gates
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Logic Gates
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Theory
Self evaluation
Procedure
Simulator
Assignment
Reference
Feedback
Video
1)
Which of the following gate will result in larger pMOS transistor size?
NAND
NOR
2)
Which of the following is preferred for realizing pull down network (PDN)?
nMOS
pMOS
Both nMOS and pMOS
3)
Assuming an electron-hole mobility ratio 2, determine the size of the pMOS and nMOS transistors in 180nm technology for a static NOR gate with equal tpLH and tpHL values.
(W/L)n=(W/L)p=360/180
(W/L)n=360/180, (W/L)p=720/180
(W/L)n=1440/180, (W/L)p=360/180
(W/L)n=360/180, (W/L)p=1440/180
4)
Let A and B be two inputs of the NAND gate. Say signal A arrives at the NAND gate later than signal B. To optimize delay of the two series NMOS inputs A and B which one would you place near to the output?
Input A should go to the nMOS transistor closer to output
Input B should go to the nMOS transistor closer to output
Doesn't make any difference
5)
Which of the following statement is NOT TRUE about the CMOS dynamic logic circuit design?
A clock signal is used to evaluate combinational logic
Dynamic logic is faster than static logic
Dynamic logic has low switching probability compared to static logic
Dynamic logic is not suitable for low frequency application
Cite this Simulator:
vlab.amrita.edu,. (2011). Logic Gates. Retrieved 2 May 2024, from vlab.amrita.edu/?sub=3&brch=165&sim=903&cnt=1688
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