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.