The microcontroller as the core device to form a cash register system, through the 4 × 4 keypad " 0" - " 9" key to achieve the number of commodities and commodity price input, " A" , " B" , " C" , " D " keys as function keys, complete " ×" ," +" ," =" and clear of, and through the LED display results.

收银机-单片机\Qian.PRJPCB
.............\Qian.SCHDOC
.............\QIAN_SHOUYINJI.ASM
.............\Quan's Lib.SCHLIB
.............\课程设计报告之收银机.doc
收银机-单片机

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