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

thanks for the explanation majoka.....
what about this code...is this code reading the senser value from adc...
and can u tell me what how this function

void sendReading(unsigned char val)
{
unsigned char l,m;
l=val%10;
m=(val/10)%10;
sendChar(aray[m]);
sendChar(aray[l]);
sendChar(',');
}

The above function is just to send values to PC via UART. It expect val as the value to be sent to PC, it then separates the digits convert them to ascii (array is the ascii values of all digits) and send it to uart using sendChar() function.

thank you ajay for your explanation... what is the the val%10 mean .......
if i change the sensor type like pressure, humidity, vibration from the original(temperature).......... than the coding for microcontroller will be change is it?........ for that i need use to use the data sheet or what ?......

what is the the val%10 mean

that is modulo operation.. its a matter of value processing..

Use the modulo operator (%) to calculate the remainder of an integer division.

thanks romel_emperado for the explanation.

i got problem in vb file that i download , when i open DAQ System.exe file it run normally..... then when i open and try to run the daqSys.vbp file it show compile error: cant find project or library.....
why i get this problem..... need some help on this..... is the problem is my vb program itself or others.....

is it a dll file missing error
dao350.dll not found or missing etc
if yes then paste this dao350.dll file to system32 folder in window
u can downland this files also here

still having the same problem (compile error: cant find project or library)..... why i will sent with the screen shot

there is another thing i cant compile the vb code to exe file it show the same error....... pls help...

try this code is it give the same error

majoka the code u give work perfectly thank for the code..... i think the code that i downloaded i have some missing syntax(line)... once again thank alot