Difference between CMOS and bipolar

Hey rrybody,
I know this isnt the correct forum to put this in but i dont know where else to post this and get a quick answer...

Im looking up logic gates and theres a option between bipolar and CMOS and i was wondering whats the differnce
For example
NAND Gate 4 Element 2 Input CMOS 14-Pin Plastic Dip Tube
NAND Gate 4 Element 2 Input Bipolar 14-Pin Plastic Dip Tube
Last edited on
thanks kbw..... i need also
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