deletions | additions       diff --git a/bits3.tex b/bits3.tex  index f45fde1..c9180e9 100644  --- a/bits3.tex  +++ b/bits3.tex 
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\item \emph{bytes}: vectors of $8$ bits  \end{itemize}  In general we   call \emph{stream} a vector whose exact size is not known \emph{a priori\\ priori}\\  Streams can be visualized as blocks of one-bit bricks:  \begin{center}  \begin{tabular}{ |c | c | c | c | c | c |} 
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\bigskip  One of the most important and fast operations for a computer (and more precisely in its Central Processing Unit, CPU) consists in \enph{shifting} \emph{shifting}  to the left or to the right of one position a vectors of bits (register). For example shifting to the right (or to the left) we have:  \begin{equation}\label{shift}  (1,1,0,1,0) {\Longleftrightarrow} (0,1,1,0,1).