monitoring software

Question

 

hello people i need help on this solution.......

As a developer for the company and is now specializing in instrument monitoring software. Your company creates a series of

applications that each monitor a different set of instruments. Unfortunately, most of these instruments still use

interfaces needs you to create a plan to ensure only one of the company's applications can access the interface at a time.
Questions
Answer the following questions for your manager:
1. How can you synchronize the applications to access the interface one at a time?
2. How will this impact the performance of the applications?

thank you.....