How many flip flops are in a 16bit counter?

  • Thread starter trickae
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  • #1
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Homework Statement



How many flip flops are in a 16bit counter? its actually an interview question, not homework per se.

Homework Equations



none

The Attempt at a Solution



I thought it was 4 since we have 2 inputs from 4 flip flops giving us 2^4 = 16 ?
however i'm told that its essentially just made up with 2 flip flops. How is this possible?
 

Answers and Replies

  • #2
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A 16-bit counter holds 16 bits. You need 16 flip flops to implement it as a ripple counter. Add a few gates to implement it as a synchronous counter.
 
  • #3
berkeman
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Yeah, 4 bits gives 16 counts or states. 16 bits gives many more states....
 

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