basic language is only for kids

Please don't say this!
Why do people critizise all the time easy and simple tools? What's bad, when a tool is so easy, that even kids can use it? That's not bad, that's really brillant!

I do lots of mathematics in electronics, like simulation of differential equations, calculations of filter performance in terms of settling, dampening and sensitivity to parts' tolerance. I wrote software for being able to analyze complex impedance networks with the help of calculation of substitute impedances. And I can tell you, that QBASIC is the most helpful and powerful tool in may daily work.
At university I even calculated signal generation of a GaAs microstrip detector, which is hit by a fundamental particle, with BASIC. It was a research project for ATLAS particle detector at CERN. Impedance network consisted of about 700 capacitors! QBASIC program was running 4 hours.

On the other hand, I remember a funny situation where someone told me to do some calculation with mathcad, because BASIC is sooooo oldfashioned. Well, I had the QBASIC program running after 4 minutes, and the mathcad man gave up after about one hour, because he was not able to get more than two curves printed on screen. So, dear Mahmood, everything is relative.
Of course, BASIC has some big disadvantages, the biggest is perhaps, that 'spagetti code' is resulting for longer programs, means, you don't know from which lines a certain command line can be jumped to. But this does not mean, that BASIC is something for kids. PLEASE...

By the way, I had the feeling that the poster didn't have ANY program on his PC, which could allow him to interface serial port. So, my recommendation was based on the point, that many older PCs do have at least QBASIC on hard disk. And before he starts to buy some software stuff, he could have tried to do the job with QBASIC. I never suggested QBASIC as to be the best methode...

Bye,
Kai