The XYZ Computer Company made a commercially-unsuccessful computer which used 19-bit
memory words. It used the 2’s complement system.
It had a single 19-bit register. A display on the operator’s console showed the contents of the
register in hexadecimal.
(a) How many hexadecimal digits did the display show?
(b) What did the display show when the register contained zero?
(c) What did the display show when the register contained the largest possible positive
number?
(d) What did the display show when the register contained the most negative number
possible?