How do you prove that you are programmer from last century?

Evolution of technology is very fast in the last few decades. In each period, there are some remarkable technology milestones. You might use some hardware or software which are out of the history such as 3.5 inch diskette if you are programmer starting to write programs in last century. How do you prove that you are programmer from last century? What kinds of special devices did you use in last century?

+1 (1 person wants to ask the same question) Posted at 2013-08-12 09:20:44