Presence in Modern Systems
Many modern processors now contain multiple processing cores and have different buses for instructions and data (for example the Harvard architecture and MIMD). Furthermore, many modern CPUs support out-of-order execution and other advanced optimization heuristics. Thus these systems do not implement a von Neumann architecture at the hardware level. However, they retain some of its obvious features such as random access memory (RAM).
Many widely used programming languages such as C++ and Java have ceased to be strictly von Neumann by adding support for parallel processing, in the form of threads. However, most of the categorically non-von Neumann languages are also functional languages and have not achieved widespread use.
Read more about this topic: Von Neumann Programming Languages
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