Linked Questions

4 votes
0 answers
116 views

Is every von neumann machine turing complete? [duplicate]

I understand that TM is a 'Model of Computation' which tells us about the computational power of a machine while Von Neumann Architecture is a 'System Architecture' that tells us about how the machine ...
codecasterz's user avatar
0 votes
0 answers
99 views

Is C actually turing complete follow up [duplicate]

I am picking up from this thread for which I have no privileges to comment on: Is C actually Turing-complete? I was wondering if there's any progress on this and what the conclusion actually was. ...
user100814's user avatar
181 votes
13 answers
66k views

Why, really, is the Halting Problem so important?

I don't understand why the Halting Problem is so often used to dismiss the possibility of determining whether a program halts. The Wikipedia article correctly explains that a deterministic machine ...
Brent's user avatar
  • 2,543
27 votes
7 answers
8k views

Are all turing complete languages interchangeable

Note, while I know how to program, I'm quite a beginner at CS theory. According to this answer Turing completeness is an abstract concept of computability. If a language is Turing complete, then ...
touring's user avatar
  • 289
11 votes
4 answers
12k views

Does our PC work as Turing Machine?

Does our PC work as Turing Machine? The model of a Turing Machine consists of infinite memory tape, which means infinite states. But suppose if our PC has 128 MB memory and 30GB disk it would have ...
siddstuff's user avatar
  • 273
4 votes
1 answer
3k views

Time complexity of arithmetic operations

I want to calculate the time complexity of the listed algorithms, please correct if I'm doing something wrong: The question is, do some operations like multiplying, dividing, or plus really affect on ...
Michael's user avatar
  • 41
1 vote
4 answers
910 views

To what extent is an x86 machine equivalent to a Turing Machine?

To what extent is the abstract model of computation specified by the x86 language Turing complete? The above question is related to this question: Is C actually Turing-complete? In theoretical ...
polcott's user avatar
  • 87
0 votes
4 answers
632 views

Grammer Class/Production Rules of Programming Languages

I'd read around on the interwebs, and a lot of the text indicated that many programming languages are generated by a context-free grammar, which leads me to 2 questions: Doesn't variable scoping ...
Mr. Minty Fresh's user avatar
2 votes
1 answer
902 views

What was the first Turing-Complete programming language?

What was the first turing-complete language? Know about the first machines and computers, but not the programming language.
MSnts's user avatar
  • 23
2 votes
2 answers
150 views

How do we define the term "computation" across models of computation?

How do we define the term computation / computable function generically across models of computation? Beginning with the textbook definitions of: {Linz, Sipser and Kozen} for "computable function&...
polcott's user avatar
  • 87