[proteus simulation] nixie tube +4x4 keyboard matrix key simple calculator

【Proteus Simulation 】 Nixie tube +4x4 Keyboard matrix key simple calculator

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• Proteus Simulation
  

Simulation device

• 74HC573 Data buffer
• 8 Bit total Yin nixie tube

Main program code

/*----------------------------------------------- 4x4 Keyboard matrix key simple calculator   Content ： Operations between integers , All divisions without decimals give incorrect results , Operation with minus sign , ------------------------------------------------*/
#include<reg52.h> // Include header file , In general, there is no need to change , The header file contains the definition of special function registers 
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