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'Live', 'As it happens'. Real-time systems pass entries, update records, accounts, balances, etc., immediately new data is received and make that data available to users within the limitations of the system. Typically, the response from the system will be measured in milli-seconds. If a real-time system is failing to present its response to users adequately fast, it may well be indicative of other bottlenecks, such as a saturated network or other processes competing for processor priority. A real time system is assumed to need immediate access to processor power and will have its priority set accordingly.

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