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The concept of cache coherence may be relatively new to you, but it’s a relatively important computer field concept. So today, this page will give you a general introduction to  cache coherence . Overview In computer architecture, cache coherence is the consistency of shared resource data, which is eventually stored in multiple local caches. Problems can occur with incoherent data when clients maintain caches of common memory resources, especially common for CPUs in multiprocessing systems. Each processor has a separate cache memory in a shared-memory multiprocessor system. It’s likely to have many copies of the shared data: one copy in the primary memory and one in the local cache of each processor requesting it. If one of the copies of the data changes, the other copies must reflect the change. Cache coherence is a discipline, and it ensures that changes in shared operands (data) values propagate throughout the system promptly. The following part lists the requirements for cache cohe

  USB 3.0   is a revolutionize Universal Serial Bus standard, which is called the third generation of USB. It is a device that connects communication between the internal or external device and the computer system at a remarkable transmitting data speed that enables plug-and-play connectivity.   To be more precise, it is capable of transmitting data 10 times faster than the older version of USB2.0 from between computer and external devices, which is equivalent to an optimum rate of 5 Gigabits per second! USB 3.0 Connectors USB Type-A   USB 3.0 Type-A, the same as the plug at the end of a flash drive, is a rectangular USB connector. USB 3.0 Type-A is compatible with both USB 2.0 and USB 1.1 connection. USB Type B USB 3.0 Type-B, usually applied in printers and other large devices, is a square USB connector with a large notch. The USB 3.0 Type-B plug can only be used in USB 3.0 Type-B port, but previous plugs are all suit for USB 3.0 Type-B port. USB Micro-A USB 3.0 Micro-A, found on man