Thank's to all for the answers.

I made a 4 digits display using 7 segmentes C.C., I'm trying to use a rtc, ds1302. In the future I will add a temperature sensor. I'm trying to learn how to write in pbasic, but it takes long time, is a long process. I'm playing with with differents components like 7 Seg, led's, sensors (light, distance, etc), i have also a lot of 5x7 and 8x8 dot matrix led that i would like to drive them.

thanks.