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Silicon Valley Micros<br />
devastated. There is a good ending though, because popular naval opinion brought<br />
her back as an Admiral.<br />
For analogy, Grace had become like the Blue Angels Flying Team that does fly-bys<br />
and airshows for the Navy, making a bunch of noise and burning lots of kerosene.<br />
The Navy supports the Blue Angels to recruit Navy flyers. The Navy supported<br />
Grace to recruit the interest of college students in bringing their talents to the technology<br />
of computing for the Navy. She did a fine job of that. By the way, she was<br />
waaaay less expensive than the "Angels" to maintain.<br />
Bugs in Your Programs<br />
It's fun to tell you the story about how Grace and her buddies invented the word<br />
"bug" as it applies to an error in a computer program. She worked with John Von<br />
Neumann in the days of World War II. John worked on solving numerical analysis<br />
problems, like the kind that let you toss mortars around.<br />
They had a repeating error in one of their programs while operating their "relay"<br />
computer. Remember, relay computers were built with mechanical clappers driven<br />
by magnetic solenoids. That was in the 1940's, before the vacuum tube machines,<br />
and certainly before the transistor and chip computers.<br />
Upon investigation, they found that some of nature's real live bugs were in there,<br />
preventing the relays from closing properly. So, next time you have a "bug" in your<br />
program. try "Raid." Oh, and by the way, that is why CP/M's debugger was called<br />
the "Dynamic Debugging Tool," or DDT for short.<br />
The Age of the Intel 8008 Microprocessor<br />
I began to work for Intel as a one-day-per-week consultant in 1973, following my<br />
somewhat discouraging experiences with the i4004. I was now the proud owner of<br />
a used Model 33 Teletype that I got by trading my 4004 teletype diagnostic program<br />
to a repair company in Cupertino.<br />
46<br />
Computer Connections