MinTech.txt is from the 2000 Census 1% PUMS data.  I've extracted all
people working in computer science and electrical engineering jobs, in
the Silicon Valley/South Bay region.  

The fields given in the header line of the file are self-explanatory,
except for Job and Education, which are coded as follows:

Education:

   13:  Bachelor's degree
   14:  Master's degree
   16:  PhD degree

Job:

   100:  Computer Scientists and Systems Analysts
   101:  Computer Programmers
   102:  Computer Software Engineers
   106:  Database Administrators
   110:  Network and Computer Systems Administrators
   111:  Network Systems and Data Communications Analysts
   140:  Computer Hardware Engineers
   141:  Electrical and Electronics Engineers