A Turing machine
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- PlutoniumLounger
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A Turing machine
He who plants a seed, plants life.
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- Administrator
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Re: A Turing machine
I remember reading about Turing machines when I was a student.
There is something a bit perverse about using advanced technology including a microprocessor and LEDs to "create" a Turing machine, but of course it makes it possible to demonstrate much more of its capabilities than the extremely limited examples we could work out as students, with strips of paper, a pencil and an eraser.
There is something a bit perverse about using advanced technology including a microprocessor and LEDs to "create" a Turing machine, but of course it makes it possible to demonstrate much more of its capabilities than the extremely limited examples we could work out as students, with strips of paper, a pencil and an eraser.
Best wishes,
Hans
Hans
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- PlutoniumLounger
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Re: A Turing machine
Nice one Hans!HansV wrote:There is something a bit perverse ...
I developed a single-instruction computer on the Uni W.A. CYBER-72 many years ago. It was a thrill to bring the Cyber to its knees.
He who plants a seed, plants life.
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- PlatinumLounger
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Re: A Turing machine
This single instruction was either STOP or B * (i.e. branch to the current instruction...)?ChrisGreaves wrote:I developed a single-instruction computer on the Uni W.A. CYBER-72 many years ago. It was a thrill to bring the Cyber to its knees.
John Gray
"(or one of the team)" - how your hospital appointment letter indicates that you won't be seeing the Consultant...
"(or one of the team)" - how your hospital appointment letter indicates that you won't be seeing the Consultant...
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- PlutoniumLounger
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Re: A Turing machine
Nice try, but no.John Gray wrote:This single instruction was either STOP or B * (i.e. branch to the current instruction...)?
"Subtract And Store".
The program instruction cycle (crudely put) is:-
Code: Select all
Next:
AC <- (AC) - (Mem)
Mem <- (AC)
-> Next
(later)
Try this SUBS
I have some (Poole & Waite) STAGE2 macros for a talk I gave on the SUBS machine at a local NaSPA meeting 4 years ago.
He who plants a seed, plants life.
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Re: A Turing machine
What a delightful project, I really enjoyed reading that site.ChrisGreaves wrote:http://aturingmachine.com/index.php
StuartR