Boolean circuit electrical engg 2nd year

[desidriver]

hi everyone i have a lab due tomorrow and wondering if someone can help me with question b. See attachment. I have done the k graph and got my boolean equation

c'd+bd+b'cd'+ab'd. i just simply can't make the circuit.
i have to use only and or gates.
can someone please help

Not sure if you can view the attachment. if you can't i have uploaded alternate links

http://i46.tinypic.com/wtt7a8.png

http://s9.postimage.org/vwyydvd7z/Sc...1_07_05_PM.png

Thanks

 

[CWatters]

c'd+bd+b'cd'+ab'd. i just simply can't make the circuit.
i have to use only and or gates.

The problem actually says inverters are allowed as well. So you can also use NAND and NOR gates if you wish (eg make a NAND from an AND and an inverter, however you may not actually need a NAND gate).

 

[LCKurtz]

The problem actually says inverters are allowed as well. So you can also use NAND and NOR gates if you wish (eg make a NAND from an AND and an inverter, however you may not actually need a NAND gate).

Of course, you never need a NAND gate since the three (AND OR NOT) are sufficient for any logical expression. I guess the interesting thing about that is that NAND's and NOR's each by themselves are also sufficient.

 

[CWatters]

Indeed. Many early gate arrays were nothing but a sea of one type of gate.

 

[rezeew]

for reaching out for help with your lab. I understand the importance of seeking assistance when facing challenges in your work. Based on the boolean equation you have provided, it seems like you are working on a combinational logic circuit with four inputs (a, b, c, and d) and two outputs (x and y).

To create the circuit using only AND and OR gates, you will first need to simplify the boolean expression. This will help reduce the number of gates needed and make the circuit easier to design. One approach to simplifying the expression is by using the Boolean algebra laws and the K-map you have already created. Once you have simplified the expression, you can proceed with designing the circuit.

Here are a few tips to help you in designing the circuit:

1. Start by identifying the inputs and outputs of the circuit. In this case, a, b, c, and d are the inputs and x and y are the outputs.

2. Draw a truth table to represent all the possible combinations of inputs and the corresponding outputs.

3. Use the simplified boolean expression to determine the logic gates needed for each output. For example, if the simplified expression for x is a OR b, then you will need one OR gate for x.

4. Draw the circuit diagram using the identified logic gates. Remember to label the inputs and outputs correctly.

5. Double-check your design and make any necessary adjustments.

I hope these tips will help you in creating the circuit for your lab. If you are still facing difficulties, don't hesitate to reach out for further assistance. Good luck with your lab!