Qualification > Sciences

HELP Physics ppr 3 Jun. 09

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moon:
plz can u help in physics Q. 10 (b) Nov. 07 ???

~~~~shreyapril~~~~:
u talking abt paper 3 rite??

Ghost Of Highbury:
attached

10bii) answere here

http://filesmelt.com/downloader/gates.jpg

moon:
y did u draw the NOT gate before the AND gate??? ???

~~~~shreyapril~~~~:
to convert its low signal into high!!
and this makes the output high
which means that alarm will ring!!!

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