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Can plastic specimen tubes use for sterilize?
As most plastics used in specimen tubes will melt if sterilized with heat the plastic tubes are normally single use
What are those tubes that the banks use?
Pneumatic tube
What are the different generations of microprocessors?
NO DIFFERENCE they all use the basic three units. I/O, ARITHMETIC and PROCESSOR. The difference is enhancement of the products. Speed buss with more bits per byte I/O speed and a co processor to alleviate overhead of I/O management.
How much vacuum does a 20 Hp Onan engine use at an ideal.?
I think it draws about 4 Lbs of vacuum.
How did the inventors of the computer figure out which components to use to make it?
Mostly by considering what components were already available and making tradeoff analyses as to which of the available components that could do the job were best suited to their needs. For example when Howard Aiken designed the Harvard Mark I and Mark II computers he considered both vacuum tubes and electromechanical devices (e.g. relays, clutches, odometer counters), but rejected tubes as likely to be too unreliable for the large number needed. He was satisfied with a slow but reliable machine. When Eckert and Mauchly designed the ENIAC they rejected electromechanical devices outright without any tradeoffs as too slow. They insisted on a high speed machine and chose to cope with reliability issues as they arose.
