Is My K-Map for Prime Numbers Correct?

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Discussion Overview

The discussion revolves around the correctness of a Karnaugh map (K-map) representation for a truth table related to prime numbers. Participants are examining the outputs associated with prime numbers and addressing potential errors in the K-map formulation.

Discussion Character

  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant presents a K-map and truth table for prime numbers, asserting that it should output 1 for prime numbers.
  • Another participant identifies a problem with the third term of the K-map, suggesting it may be incorrect.
  • A participant expresses difficulty in interpreting the provided figure, indicating a need for clarity.
  • Further clarification is provided with a larger image of the K-map, but the original poster questions the validity of the identified error in the third term.
  • Another participant points out a specific looping issue in the K-map, questioning the transition from one term to another.
  • A participant acknowledges an error after reviewing the feedback, attributing the mistake to a lapse in focus.
  • Another participant suggests a different term (B'CD) as the correct representation instead of the one initially presented (AB'CD).

Areas of Agreement / Disagreement

Participants express differing views on the correctness of the K-map, with some identifying errors while others defend their interpretations. The discussion remains unresolved regarding the accurate representation of the third term.

Contextual Notes

There are indications of misinterpretations and potential errors in the K-map, but specific assumptions and definitions are not fully clarified, leaving room for further exploration.

mr_coffee
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Hello everyone, here is my k-map of the truth table for prime numbers, if its a prime number it should output 1. I have the truth table and k-map in this picture:
http://img226.imageshack.us/img226/568/jiji4uh.jpg
Thanks.
 
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There is a problem with the third term of your answer.
 
I can't read your figure.

KM
 
sorry here is the picture bigger! i don't see how my third term is wrong? http://img132.imageshack.us/img132/9960/lastscan2rz.jpg
 
Last edited by a moderator:
mr_coffee said:
sorry here is the picture bigger! i don't see how my third term is wrong? http://img132.imageshack.us/img132/9960/lastscan2rz.jpg

you looped `A`BCD and A`BCD, so how did you end up with A`BCD?
 
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hm...I only looped A'B & CD so i got A'BCD
 
ohhh i see where i ****ed up, sorry! my friend pointed it out also! too much coffee or somthing. :)
 
reply

mr_coffee said:
Hello everyone, here is my k-map of the truth table for prime numbers, if its a prime number it should output 1. I have the truth table and k-map in this picture:
http://img226.imageshack.us/img226/568/jiji4uh.jpg
Thanks.
Hello Mr Coffe...i find some mistake in the third term...it would be B'CD but not AB'CD...
 
Last edited by a moderator:

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