Among the strengths of the fourth - generation microprocessor cnc ( mcnc ) are added part program memory storage , reduction of printed circuit boards , programmable interface , faster memory access , parametric subroutines , and macro capabilities 在第四代微處理器cnc中,部分程序存儲(chǔ)器的加入、印制電路的縮減、可編程的界面、更快捷的存儲(chǔ)路徑、參數(shù)子程序和超大容量都是它的亮點(diǎn)。