sbit IN0=P0^0;
sbit IN1=P0^1;
sbit IN2=P0^2;
sbit IN3=P0^3;
sbit IN4=P0^4;
sbit IN5=P0^6;
sbit IN6=P0^6;
sbit IN7=P0^7;

sbit TXD3_2=P5^1;
sbit RXD3_2=P5^0;

sbit OUT0=P2^0;
sbit OUT1=P2^1;
sbit OUT2=P2^2;
sbit OUT3=P2^3;
sbit OUT4=P2^4;
sbit OUT5=P2^5;
sbit OUT6=P2^6;
sbit OUT7=P2^7;

sbit ERR=P4^6;
sbit RUN=P4^5;

sbit KEY1=P3^6;
sbit KEY2=P3^7;
sbit KEY3=P4^1;
sbit KEY4=P4^2;
sbit KEY5=P4^3;
sbit KEY6=P4^4;