High Quality Content by WIKIPEDIA articles! The program MikroSim is an educational software for hardware-non-specific explanation of the general functioning and behaviour of a virtual processor, running on the operating system Microsoft Windows. With this e-learning tool, devices like miniaturized calculators, microcontroller, microprocessors, and computer can be explained didactically on own-developed instruction code on register transfer level, which are controlled by program sequences of micro instructions (microcode). Based on this, on higher level of abstraction it is possible to develop an instruction set being able to control a virtual application board.