A desktop laser printer has a

$3$

$0$

$0$

$-$

pixel

$-$

per

$-$

inch resolution. If each pixel is stored in one bit of memory, how many bytes of memory are required to store the complete image of one

$8$

$.$

$5$

$$by

$1$

$1$

$$inch page of paper?

Answer

$3$

$0$

$0$

$$pixels per inch, so in

$1$

$$square inch there are

$$pixels

One bit per pixel, so this is

$$BYTES per square inch

The

$8$

$.$

$5$

$$by

$1$

$1$

$$inch paper needs

$$bytes