Tough question... I wrote my first program on a TRS-80 in the early 80s; but it was typed right out of a book and I didn't understand anything. In the early

Tough question... I wrote my first program on a TRS-80 in the early 80s; but it was typed right out of a book and I didn't understand anything. In the early 90s I wrote a short text adventure on my own as part of a high school project. My college CS curriculum had a lot of programming. I started professionally in 1996. I put in 20-30 years; but if you want to get technical it may be above 30.