Daily Brain Teasers for Sunday, 05 February 2017
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A college teacher reminds her class of tomorrow's final exam. 'Now class, I won't tolerate any excuses for you not being here tomorrow. I might consider a nuclear attack or a serious personal injury, illness, or a death in your immediate family, but that's it, no other excuses whatsoever!'
A smart-ass student in the back of the room raised his hand and asked, 'What would you say if tomorrow I said I was suffering from complete and utter sexual exhaustion?'
The entire class is reduced to laughter and snickering. When silence was restored, the teacher smiled knowingly at the student, shook her head and sweetly said, 'Well, I guess you'd have to write the exam with your other hand.'
Calculator patentIn 1850, the first U.S. patent for push-key operation for an adding machine was patented by Dubois D. Parmelee of New Paltz, N.Y. (No. 7,074). His "Calculating Machine" patent diagram showed 9 keys. The operation of any key would cause a ratchet to raise a graduated indicator rod at the rear by a corresponding number of notches. Key 2 followed by Key 4 would thus reveal a total of 6 graduations. He anticipated another form using dial indicators to count tens and hundreds. Parmelee also invented a suction socket for artificial limbs almost a century before its general use (Patent No. 37,637, 10 Feb 1863). His calculator was unsuccessful. Over 40 years later, the first practical adding machine was invented by William Burroughs.«