So now we need to talk about terminal services in cloud computing, so as they say you know
what is old will be new again. So back in the sixties and seventies you used to
have something cold mainframes and dumped terminals. So what that was, Is you
had a mainframe and this was a very impressive computer. It might had 256K Ram.
It was a very very powerful computer, then connected off this computer or this main
frame for something called dumb terminal.
TERMINAL SERVICES IN CLOUD COMPUTING
So you know anywhere between 5 - 150
thousands dumb terminals. These dumb terminals all they were simple little
devices that allowed you to plug in a monitor, keyboard and a mouse. If you
have them on cloud computing, these dumb terminals, the only intelligent they had in them, was
the ability to connect back to the mainframe. So in the mainframe environment
all the processing everything happens on the main frame itself. The dumb
terminal that you sat down and interacted with had no intelligence it basically
sends all your little keystroke and your mouse strokes back to the mainframe.
The mainframe process all the information and then sent the output to your
monitor or the printer etc. So basically think of the old mainframes, think
about if you could plug in a hundred different sets of monitors, keyboards and
mice to one single computer and then everybody could use, you know they're
their own dumb terminal of all that same type and that was the old mainframe
environment. Now what the mainframe environment did is this server this
mainframe had a certain amount of processing power, so the processor you know be
however big, it was not Xeon. But the processor were s called, so what it would
do is in order to get all these dumb terminals access to the mainframes and
none of them got shut out is it gave every single dumb terminal on demand frame
a sliver of time, so basically out of all the processing cycles it had, it
would say okay I give half a millisecond to dumb terminal one that I can have a
few millisecond to dump terminal two, so what would happen is the CPU it would
have a certain amount of time that it would a lot and then will give a little
portion that time to the first dumb terminal .
This meant that every dumb
terminal that was connected into this mainframe got a little CPU time, so with this
mainframe is the only one CPU around all CPU cluster and it shared out the
power of that CPU by giving each dumb terminal that was connected it's a little
sliver of time. So when we come to terminal services you basically have the
same thing going on except now days we change the terminology a little bit. So
now instead of having a mainframe server, you have a terminal services server. Now
this terminal services server most likely now it is installed on a Windows 2008
server so they have terminal services for Windows services this came out with
Windows NT 4.5 way back like 12 years ago, now what that does, that allows
terminal services clients can get little slivers of time from the processor on
this terminal server.
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