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C++QED is an application-programming framework for simulating open quantum dynamics in general. It has demonstrated the ability to simulate full Master equation of up to several thousand, and quantum trajectories of up to several hundred thousand dimensions.
The basic idea is to allow users to build arbitrarily complex interacting quantum systems out of free subsystems and interactions (elements), and simulate their time evolution with a number of available time-evolution drivers.
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The functional model of the old calculator series Wang 700 and 15VSM
...While Wang 700 were just programmable calculators, Soviet machines were almost complete computers taking into account their advanced CPU command set, huge RAM volume, ability to work with wide set of peripheral devices including the video terminal 15IE (15ИЭ) and existence of BASIC and other programming languages written as loadable applications. Still I consider them as calculators also due to some aspects exclusively specific to calculators. The project is intended for research and education purposes.