PHP .4 http://en.wikipedia.org/wiki/PHP C .9 http://en.wikipedia.org/wiki/C_programming C++ .8 http://en.wikipedia.org/wiki/C_programming SystemC .5 http://en.wikipedia.org/wiki/Systemc VHDL .4 http://en.wikipedia.org/wiki/VHDL Verilog .3 http://en.wikipedia.org/wiki/Verilog Linux .8 http://en.wikipedia.org/wiki/Linux HTML/CSS .6 http://en.wikipedia.org/wiki/HTML Javascript .3 http://en.wikipedia.org/wiki/Javascript SQL .4 http://en.wikipedia.org/wiki/SQL Matlab .2 http://en.wikipedia.org/wiki/Matlab SCH/PCB .5 http://www.cadsoft.de/ ObjectiveC .9 http://en.wikipedia.org/wiki/Objective-C Spanish .8 http://en.wikipedia.org/wiki/spanish French .5 http://en.wikipedia.org/wiki/french Embedded OS .4 http://en.wikipedia.org/wiki/Embedded_operating_system Python .7 http://en.wikipedia.org/wiki/Python_%28programming_language%29