real time 
noun
1The actual time during which a process or event occurs: along with much of the country, he watched events unfolding in real time on TV...
- Payment is made by credit or debit card and is processed securely online in real time.
- What is new is the array of information resources now available in real time or near real time.
- It is possible to do impressive things in real time, as computer games demonstrate.
1.1 [as modifier] Computing Relating to a system in which input data is processed within milliseconds so that it is available virtually immediately as feedback to the process from which it is coming, e.g. in a missile guidance system: real-time signal processing real-time software...
- The hard real-time system would guarantee that sensor inputs would not be missed.
- In a real-time system, each of these cases would be an opportunity for a missed deadline.
- The real-time combat system that the game is heavily dependant on is rock-solid.