# Please somebody help :( for my exam thanks

#### Mark Rhenzo Medalla

Joined Jul 19, 2016
2
Illustrate the following logical expression to its equivalent logical curcuit.

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#### Alec_t

Joined Sep 17, 2013
12,148
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?

#### Mark Rhenzo Medalla

Joined Jul 19, 2016
2

#### Alec_t

Joined Sep 17, 2013
12,148
So now we have 3 expressions.
What have you been taught about logic gates and functions?
Re-read item 1 of post #2.

#### WBahn

Joined Mar 31, 2012
26,398
Illustrate the following logical expression to its equivalent logical curcuit.View attachment 109323
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?

#### Ramussons

Joined May 3, 2013
1,027
Take a look at De Morgan's laws.

#### Papabravo

Joined Feb 24, 2006
16,459
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.

#### WBahn

Joined Mar 31, 2012
26,398
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.
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.

#### Papabravo

Joined Feb 24, 2006
16,459
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.
Good point. A square box with the symbol inside works for me.

#### shteii01

Joined Feb 19, 2010
4,644
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.

#### Papabravo

Joined Feb 24, 2006
16,459
The circumpunct symbol does indeed have a standard meaning, but is rarely used.
https://en.wikipedia.org/wiki/Logic_gate
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.