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On 5 January 1975, the 12-bit field that had been used for dates in the TOPS-10 operating system for DEC PDP-10 computers overflowed, in a bug known as "DATE75". The field value was calculated by taking the number of years since 1964, multiplying by 12, adding the number of months since January, multiplying by 31, and adding the number of days since the start of the month; putting 2 12 − 1 ...
In computer science, the computational complexity or simply complexity of an algorithm is the amount of resources required to run it. [1] Particular focus is given to computation time (generally measured by the number of needed elementary operations) and memory storage requirements.
This problem can be solved in polynomial time, and in fact is complete for the complexity class NL. If additionally all OR operations in literals are changed to XOR operations, then the result is called exclusive-or 2-satisfiability , which is a problem complete for the complexity class SL = L .
5.152×10 12: S2050/S2070 1U GPU Computing System from Nvidia; 11.3×10 12: GeForce GTX 1080 Ti in 2017; 13.7×10 12: Radeon RX Vega 64 in 2017; 15.0×10 12: Nvidia Titan V in 2017; 80×10 12: IBM Watson [5] 170×10 12: Nvidia DGX-1 The initial Pascal based DGX-1 delivered 170 teraflops of half precision processing. [6] 478.2×10 12 IBM ...
Seth Lloyd calculated [9] the computational abilities of an "ultimate laptop" formed by compressing a kilogram of matter into a black hole of radius 1.485 × 10 −27 meters, concluding that it would only last about 10 −19 seconds before evaporating due to Hawking radiation, but that during this brief time it could compute at a rate of about ...
A finite-state automaton from automata theory, a branch of theoretical computer science. Theoretical computer science is a subfield of computer science and mathematics that focuses on the abstract and mathematical foundations of computation. It is difficult to circumscribe the theoretical areas precisely.
There is also an increasing attention to scientific modelling [4] in fields such as science education, [5] philosophy of science, systems theory, and knowledge visualization. There is a growing collection of methods, techniques and meta-theory about all kinds of specialized scientific modelling.
A computational model uses computer programs to simulate and study complex systems [1] using an algorithmic or mechanistic approach and is widely used in a diverse range of fields spanning from physics, [2] engineering, [3] chemistry [4] and biology [5] to economics, psychology, cognitive science and computer science.