"I know you wanted to upgrade several systems," he had said.

It is spending $100 million to upgrade its systems in 14 states.

In recent years the system has been upgraded to add more features.

The system has been upgraded several times since its opening.

They were all the time upgrading their systems to stay competitive.

Do consider how you will continue operating while your system is being upgraded.

The original target market was small companies ready to upgrade their existing systems.

That system has been upgraded several times and is still operational.

The system was repaired and upgraded a few years ago because of environmental problems.

The library's integrated computer management system has been upgraded several times.