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Unformatted text preview: a computing machine Q. Who invented the first computer?
a) Steven Jobs
b) Alan Turing
c) John von Neumann
d) Bill Gates
e) AT & T
f) Charles Babbage"
" 3 turing machine-Turing Machine
Alan Turing - British Mathematician
In 1936... he developed the concept of a
simple theoretical machine,
consisting of: the enigma machine is a not important --its the ww2 thing • an infinitely long tape divided
into identical squares
• a scanner to read the tape. The Enigma Machine Turing Machine This Turing machine could:
1) move the tape to the right
2) move the tape to the left
3) print a slash
4) erase a slash
Turing proved mathematically that through this binary
code , one could devise and execute an indefinite number
of programs and that machines operating on this principle
could be constructed. Computer Programs he proved that through BINARY logic. ---the yuring machine is the conceptual
basis if the MODERN computer!!!!
important conceptual idea. digression--he was homosexual and they treated him with drugs and lead to
depression and he commited suicide because of it Neumann-STORED PROGRAM!!!! --it can command the turing hardware
by itself. John von Neumann - Mathematician
In the 1940s... he developed the idea of
devising a program to instruct the Turing
Idea of a stored program within the
computer s internal memory.... a
computer can prepare and execute
its own programs! 4 single electron recording occured at this time--they discovered
or came up with the idea of an Action Potential----its on or off
like a binary code. The Neuronal Model
They showed that:
• The operation of a nerve cell and its
connections could be modeled in terms of
logical elements .... there is a binary element...
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- Fall '08