Engineering Full adder circuit using NAND v NOT, AND, OR v PLA logic

AI Thread Summary
The discussion centers on the design of a full adder circuit using different logic gate configurations: NOT, AND, OR, NAND, and Programmable Logic Arrays (PLA). The initial design with NOT, AND, and OR gates required six chips, while the NAND logic version was reduced to seven chips from an original 40 gates. The PLA configuration proved to be the most efficient, needing only four chips. Participants question the advantages of using a single type of chip like NAND compared to a combination of NOT, AND, and OR gates, and whether NAND logic provides any benefits in this context. The conversation also touches on the potential for using a single PLA IC for the design instead of multiple chips.
Bourbon daddy
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I have designed a full adder circuit, first of all implementing NOT, AND, OR logic, then redesigned NAND logic and finally Programmable Logic Array.

I would like to talk evaluate my designs a little and need a bit of help.

When using NOT, AND, OR gates I used the following;

NOT x 3 = 1 chip
AND x 11 = 3 chips
OR x 5 = 2 chips

Total 6 chips required

Using NAND Logic, I think I originally used 40 NAND gates, but reduced it to 26, so 7 chips would be required.

PLA:

NOT x 3 = 1 chip
AND x 7 = 2 chips
OR x 2 = 1 chip

Total 4 chips required.

Obviously, PLA offers the best solution for this scenario regarding efficiency, cost, speed and reliability.

I was wondering if using just one type of chip, such as the NAND offers any benefits to using various types of chip(NOT, AND and OR). If not, am I right in thinking that in this situation, using NAND logic offers no benefits to this circuit over NOT, AND, OR logic.

Regards
 
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Bourbon daddy said:
I have designed a full adder circuit, first of all implementing NOT, AND, OR logic, then redesigned NAND logic and finally Programmable Logic Array.

I would like to talk evaluate my designs a little and need a bit of help.

When using NOT, AND, OR gates I used the following;

NOT x 3 = 1 chip
AND x 11 = 3 chips
OR x 5 = 2 chips

Total 6 chips required

Using NAND Logic, I think I originally used 40 NAND gates, but reduced it to 26, so 7 chips would be required.

PLA:

NOT x 3 = 1 chip
AND x 7 = 2 chips
OR x 2 = 1 chip

Total 4 chips required.

Obviously, PLA offers the best solution for this scenario regarding efficiency, cost, speed and reliability.

I was wondering if using just one type of chip, such as the NAND offers any benefits to using various types of chip(NOT, AND and OR). If not, am I right in thinking that in this situation, using NAND logic offers no benefits to this circuit over NOT, AND, OR logic.

Regards

Why is the PLA solution a multi-chip solution? You should be able to do it all in one PLA IC of some modest size. Which PLA did you target?
 

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