On 12/12/2015 6:22 AM, Mike wrote:
The one question I do have for the older gentlemen on here is what in the world did the computers without a screen to look at do? Now I know about the tape, cassette tape's and even the paper with the hole punches in them but what kind of applications were they use for? Mathematics or? ? ?
I have close friend that related a story to me the other day. In his younger days he worked for a military contractor that manufactured inertial reference systems for military aircraft. They used a bare naked PDP-11 (just lights and switches) as part of final acceptance test. Over the years, he got quite adept and manipulating the switches and reading the lights during the four hour test. One day a government auditor noticed that he was performing the final test impossibly faster than the 'standard' amount of time and concluded that he was not testing the unit per the procedure and that the big defense company was in violation of their government contract. To say this was a *big* deal is an understatement. When he was called to the plant manager's office, he offered to prove that he was following the test procedure to the auditor and anyone else. The first attempt to demonstrate the test procedure was a complete bust. Every time he manipulated the switches or read the lights, the auditor would interrupt him so that he could compare the front panel switches and lights to the test procedure. He could not do the test with the constant interruptions - he'd get lost and confused. Now he was getting a little scared. He finally convinced the auditor to video tape the final test procedure so that he could perform it uninterrupted. He, the plant manager, and the auditor reviewed the video tape - pausing the tape as necessary - and concluded that he actually did perform the test procedure as required. He mentioned that manipulating the switches was committed to muscle memory and it was like playing the piano. As a reward for his efficiency, the auditor attempted to reduce the 'standard' amount of time for the product - thus reducing the amount of money that the government would pay the contractor for the service. After all, if he could perform the test that fast - anybody could... Rob Doyle
