The implementation process starts with a logic minimization phase, to be described below, in order to simplify the function table by combining the separate terms into larger ones containing fewer variables.
Next, the minimized result may be split up in smaller parts by a factorization procedure and is eventually mapped onto the available basic logic cells of the target technology.
[9] Minimizing Boolean functions by hand using the classical Karnaugh maps is a laborious, tedious, and error-prone process.
[11][12] Although this Quine–McCluskey algorithm is very well suited to be implemented in a computer program, the result is still far from efficient in terms of processing time and memory usage.
[4][3] It is a resource and performance efficient algorithm aimed at solving the heuristic hazard-free two-level logic minimization problem.
[13] Rather than expanding a logic function into minterms, the program manipulates "cubes", representing the product terms in the ON-, DC-, and OFF- covers iteratively.
Although the minimization result is not guaranteed to be the global minimum, in practice this is very closely approximated, while the solution is always free from redundancy.
[14] The ESPRESSO-AB and EQNTOTT (equation to truth table) program, an updated version of ESPRESSO for modern POSIX systems, is available in Debian Linux distribution (.deb) file format as well the C source code.
[16] Logic Friday is a free Windows program that provides a graphical interface to Espresso, as well as to misII, another module in the Berkeley Octtools package.
It employs unit propagation as an additional optimization technique for the various algorithms in ESPRESSO-II that are based on the unate recursive paradigm.
Another addition is allowing control over when literals can be raised which can be exploited to effectively minimize Kleene logic functions.