-A soft ware that are small, and fast.-Use multiple user at the same time.-Easy to use and manage, simplify complex.-Save current values at the time, and get up earlier.
- Soft ware is a small, fast - the simultaneous use of multiple user - easy to use and manage the complexity - can add to the value at the current time and browse through the previous one.
- a soft ware small and fast - used simultaneously for several user -. The use and management is simple, simple, complex - can ban to the value at the current time, and browse the previous .