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  2. Clock recovery - Wikipedia

    en.wikipedia.org/wiki/Clock_recovery

    Clock recovery is very closely related to the problem of carrier recovery, which is the process of re-creating a phase-locked version of the carrier when a suppressed carrier modulation scheme is used. These problems were first addressed in a 1956 paper, which introduced a clock-recovery method now known as the Costas loop. [3]

  3. Carrier grade - Wikipedia

    en.wikipedia.org/wiki/Carrier_grade

    In telecommunications, a "carrier grade" or "carrier class" refers to a system, or a hardware or software component that is extremely reliable, well tested and proven in its capabilities. Carrier grade systems are tested and engineered to meet or exceed "five nines" high availability standards, and provide very fast fault recovery through ...

  4. List update problem - Wikipedia

    en.wikipedia.org/wiki/List_update_problem

    The List Update or the List Access problem is a simple model used in the study of competitive analysis of online algorithms.Given a set of items in a list where the cost of accessing an item is proportional to its distance from the head of the list, e.g. a linked List, and a request sequence of accesses, the problem is to come up with a strategy of reordering the list so that the total cost of ...

  5. Computer maintenance - Wikipedia

    en.wikipedia.org/wiki/Computer_maintenance

    Softwares packages and operating systems may require regular updates to correct software bugs and to address security weaknesses. Software updates in computer maintenance [3] are essential for maintaining the functionality and efficiency of systems. These updates often include enhancements that improve the overall performance and stability of ...

  6. 2012 RBS Group computer system problems - Wikipedia

    en.wikipedia.org/wiki/2012_RBS_Group_computer...

    A software update was applied on 19 June 2012 to RBS's CA-7 software [2] which controls its payment processing system. It later emerged that the update was corrupted by RBS technical staff. [3] [4] Customers' wages, payments and other transactions were disrupted. [4] [5] Some customers were unable to withdraw cash using ATMs or to see bank ...

  7. List of cleaning tools - Wikipedia

    en.wikipedia.org/wiki/List_of_cleaning_tools

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