1-How to get/set system date and time.
2-How to get version of O/S.
3-How to get size of memory(RAM).
4-How to get disk drive(s) and their drive letter.
5-How to get free and used space of disk.
6-How to get available ports.
7-How to display adopter informations.

(without using builin modules)

Assembly Language...
Plz help me to solve above problems.