
Foreword
For me, three major events happened in 1969:
As a student in a major eastern university I had stumbled on a new and
fascinating business of writing software for computers. In those days there was
no such thing as going down to your local computer store and buying a
shrink-wrapped box of software off the shelf. In fact, with the average com-
puter having less than four thousand words of memory, a processor measured
in millions of instructions per minute instead of billions of instructions per
second, and costing hundreds of thousands of dollars to buy, software was
written to make maximum use of the machine’s power. Software was written
from