Computer Science At Home
A computer is a machine or device that performs processes, calculations and operations based on instructions provided by a software or hardware program. It has the ability to accept data , process it, and then produce outputs. Large-scale distributed systems were first used for scientific and engineering applications and took advantage of the advancements in system software, programming models, tools, and algorithms developed for parallel processing. Modern supercomputers derive their power from architecture and parallelism rather than the increase of processor speed. The supercomputers of today consist of a very large number of processors and cores communicating via very fast custom interconnects. Hundreds of allied bombes were built in order to determine the daily rotor start positions of Enigma cipher machines, which in turn allowed the Allies to decrypt German messages. The basic idea for bombes came from Polish code-breaker Marian Rejewski's 1938 "Bomba." That sam