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Mux question

 
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phoenix_pavan



Joined: 10 May 2008
Posts: 24


Post10 May 2008 18:23   Mux question

Design a system using a 4:1MUX to identify whether a 4-bit number is prime
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basha_vlsi



Joined: 19 Mar 2008
Posts: 23
Helped: 2
Location: Hyderabad, India


Post13 May 2008 6:28   Re: Mux question

with four bit the possible prime no are 2,3,5,7,11,13

y = f(A,B,C,D) = ∑(2,3,5,7,11,13);

...........C __|\
..................| \
...........D __| |
.....C & D __| |------ Y
notC & D __| |
...................| /
...................|/
....................| |
....................A B

( To visible mux diagram i added excess .(dots) which doesn't signify any thing)

For the 4:1 mux give inputs as C, D, ( C and D) , ( (notc) and D) resply
and select inputs as A, B
out put is Y

Here A is MSB and D is LSB

[/img]
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sp3



Joined: 01 Jan 2008
Posts: 70
Helped: 5


Post13 May 2008 6:55   Re: Mux question

Hi basha_vlsi,

How did u arrive at the inputs .. I mean design of (C and D) ( not(C) and D).. Please elaborate.. it will be helpful..

thanks,
sp3
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basha_vlsi



Joined: 19 Mar 2008
Posts: 23
Helped: 2
Location: Hyderabad, India


Post13 May 2008 10:21   Re: Mux question

In (C and D) and is logical and


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