• Support PF! Buy your school textbooks, materials and every day products Here!

How to obtain 4 input or gate using 2 input gates?

  • Thread starter denian
  • Start date
  • #1
160
0
how can i obtain 4 input or gate using 2 input gates? :confused:

any help will be appreciated.
 

Answers and Replies

  • #2
You have four inputs a,b,c,d.
Run a and b in one or gate. And get output m.
Run c and d in another or gate. And get output n.
Run m and n in a third or gate, and you have your final output z.
 
  • #3
Hurkyl
Staff Emeritus
Science Advisor
Gold Member
14,843
17
Doing the problem for him doesn't help him learn. :tongue2: For example, it takes away from him the possibility of figuring out on his own that he could look at the algebraic expression W or X or Y or Z, and figure out that he can group them in pairs, then turn the result into a circuit. These things are much better learned by working it out yourself than being handed the answer. :frown:
 
  • #4
160
0
hi. thank you. i am thinking of that way too but wouldn't that require 3 get instead of 2?
 

Related Threads for: How to obtain 4 input or gate using 2 input gates?

  • Last Post
Replies
5
Views
1K
Replies
10
Views
1K
Replies
2
Views
1K
  • Last Post
Replies
3
Views
2K
  • Last Post
Replies
0
Views
3K
  • Last Post
Replies
1
Views
340
  • Last Post
Replies
4
Views
515
  • Last Post
Replies
3
Views
2K
Top