for making your own programmer, go through the 89S51/52 Programmer tutorials at http://www.engineersgarage.com/tutorials.
You should start with http://www.engineersgarage.com/tutorials/89s51-89s52-programmer-basics
for making your own programmer, go through the 89S51/52 Programmer tutorials at http://www.engineersgarage.com/tutorials.
You should start with http://www.engineersgarage.com/tutorials/89s51-89s52-programmer-basics