changing this project (Data acquisition system using 8051) to another type of DAQ...need help

MSDN is just an addon software to show help regarding functions etc. you will be able to run VB without MSDN installed. keep in mind code is for VB6 not other versions.

thanks ajay for the reply...
how about matlab gui can the interface be done with matlab... just asking for infomation....if can i want to try....

yes i believe. you can make UI in matlab too. But dont ask me how coz i have no idea

@ redzs08
u can make GUI and also can interfaced it with serial port
there are many sample codes in matlab
seee it on net
algo will be same as in vb6

thanks for the info ajay and majoka i will try on both if possible....

i dont understand this function on the code ......
i bode the function (syntax) that i need some explanation..

void main()
{

unsigned char sensor=0,reading;
P1=0;
initSerial();
usDelay(50);
while(1)
{
if(sensor==4)
sensor=0;
if(sensor==0)
sendChar('N');
P1=(P1&0xf8)+sensor; // what this syntax doing?
latch();
startConv();
wait();
get();
reading=P2;
sendReading(reading);
sensor++;

}
}

i hope someone help me.....

unsigned char sensor=0,reading; // general variables
P1=0; // making port1=0
initSerial(); // initilizing serial port @ 9600 bps with 11.0592 Mhz
usDelay(50); // some delay
while(1) // forever loop
{
if(sensor==4) // it means ur using 4 sensors only
sensor=0;
if(sensor==0) // send 'N' to pc for understanding of GUI
sendChar('N'); // sending character to pc
P1=(P1&0xf8)+sensor; //relays are also on port 1 so we need only to change 4 bits of address pin not relay so
// doing a AND logic here with 0xf8 and then add it with sensor now port1 low4 bits has sensor value from 0 to 3
latch(); // latch enable with address
startConv(); // start conversion
wait(); // waiting for end of conversion
get(); // reading data
reading=P2;
sendReading(reading);
sensor++; // next sensor

thank majoka the explanation was good....

i got problem on this code....

void serialRoutine() interrupt 4
{
if(RI==1)
{
temp=SBUF;
switch(temp)
{
case('a'):
relay1=1;
break;
case('b'):
relay1=0;
break;
case('c'):
relay2=1;
break;
case('d'):
relay2=0;
break;
case('e'):
relay3=1;
break;
case('f'):
relay3=0;
break;
case('g'):
relay4=1;
break;
case('h'):
relay4=0;
}
RI=0;
}
}
void sendReading(unsigned char val)
{
unsigned char l,m;
l=val%10;
m=(val/10)%10;
sendChar(aray[m]);
sendChar(aray[l]);
sendChar(',');
}

i will need someone explanation..... hope not asking much...

this is interrupt function for serial port
when data is received from pc this function call automatically
sbuf has that data
here case is used to on and off the suitable relay
when reception occur RI flag become high an d generate interrupt