deletions | additions       diff --git a/bits1.tex b/bits1.tex  index cd9ecfa..9848d9a 100644  --- a/bits1.tex  +++ b/bits1.tex 
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\caption{Sum and product}\label{SumProd}  \end{table}    The first column and the  second one, one  represent the values of two input variables variables,  $a$ and $b$, used here  to represent the two bits we have to sum orto  multiply; the third and the fourth ones, respectively respectively,  represent the results of the sum and the product of $a$ and $b$.\\ \medskip   Performing operations with bits is not the same as doing so with ``usual''