# Please somebody help :( for my exam thanks

Discussion in 'Homework Help' started by Mark Rhenzo Medalla, Jul 19, 2016.

1. ### Mark Rhenzo Medalla Thread Starter New Member

Jul 19, 2016
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Illustrate the following logical expression to its equivalent logical curcuit.

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Last edited: Jul 19, 2016
2. ### Alec_t AAC Fanatic!

Sep 17, 2013
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Welcome to AAC!
1) Show us your best effort so far. This is a 'Homework help' forum; not a 'Homework done for you' one .
2) What logical expression?

Jul 19, 2016
2
0

4. ### Alec_t AAC Fanatic!

Sep 17, 2013
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So now we have 3 expressions.
What have you been taught about logic gates and functions?
Re-read item 1 of post #2.

5. ### WBahn Moderator

Mar 31, 2012
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YOU need to show YOUR best attempt to work YOUR homework. We can then see where you are going wrong and try to get you back on course.

Your expressions use four operators. What are they? Three are pretty standard for AND, IOR, and XOR. What's the fourth for?

6. ### Ramussons Active Member

May 3, 2013
557
92
Take a look at De Morgan's laws.

7. ### Papabravo Expert

Feb 24, 2006
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In particular you need to tell us or provide a truth table for the operation indicated by the circle with a small dot inside in expression number 3. Whatever it is, it is non-standard, and we are not mind readers, so help us out here if you can.

8. ### WBahn Moderator

Mar 31, 2012
17,716
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It's looking increasingly like the TS doesn't know what it means, either. They just want someone to work their homework for them. Actually understanding what is being asked isn't needed for that.

9. ### Papabravo Expert

Feb 24, 2006
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Good point. A square box with the symbol inside works for me.

10. ### shteii01 AAC Fanatic!

Feb 19, 2010
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The sad part is that they don't even need to build the best circuit, meaning they don't need to do any simplification. They can simply make individual operation using specific gate, it will take a bunch of gates, but that just manual work, no brain work involved.

11. ### RBR1317 Active Member

Nov 13, 2010
229
48
The circumpunct symbol does indeed have a standard meaning, but is rarely used.
https://en.wikipedia.org/wiki/Logic_gate

absf likes this.
12. ### Papabravo Expert

Feb 24, 2006
10,136
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You're right the circumpunct symbol is rarely used. It's right up there with the Sheffer Stroke, the Peirce Arrow, and the Quine Dagger which are a couple of obscure names for the more familiar NAND and NOR functions.