A building is surrounded with $4$ areas:NW$,NE,SW,SE.$ Each area is using $4$ security lights and each bits of ax register is representing a set of security lights in each region.

Suppose the conten of ax register is a hexadecimal number BEEF.

$\backslash$table$[[ax,1,0,1,1,1,1,1,0,1,1,1,0,1,1,1,1],[$No$.,1,2,3,4,$J$,,7,,7,10,11,12,13,14,15,16],[$area$,,,W,,,,E,,,,,,,,,]]$

Write a program In MASM x$86$ to

a$.$ Display the ax register at base $2$

b$.$ Determine which security lights are off?

Sample output

$Ax=1011111011101111$

The following security lights are off:

$2,8,12$