急求答案41.44.45，英语版

41. Why are binary numbers important incomputing?
Data and instructions are represented in binary inside the computer.
44. Why do microprocessors such as pagershave only 8-bit words?
Pagers are not general purpose computers. The programs in pagers can
be represented in 8-bit machines.

45. Why is important to study how to manipulate fixed-sized numbers?
It is important to understand how to manipulate fixed-sized numbers
because numbers are represented in a computer in fixed-sized format.