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In Proteus A Connection Proplem, I Can't Connect Two Components

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minasto	Posted: July 10, 2011 12:17 am
Newbie Group: Members+ Posts: 1 Member No.: 35,353 Joined: July 10, 2011	I Can't Connect 74LS147 & 74LS04 Also I Can't Connect 74LS04 & 74Ls247 Here's The Circuit : http://www.4shared.com/photo/fXQgkjEi/1_online.html Please Help .... Thanks

Abdullah M.A.	Posted: July 10, 2011 02:23 pm
Forum Addict ++ Group: Spamminator Taskforce Posts: 4,254 Member No.: 10,604 Joined: August 16, 2007	You can't or you do not know??? Abdulla -------------------- "A scientist can discover a new star, but he cannot make one. He would have to ask an engineer to do that." "For an optimist the glass is half full, for a pessimist it's half empty, and for an engineer is twice bigger than necessary."

Gorgon	Posted: July 10, 2011 05:54 pm
Forum Addict ++ Group: Trusted Members Posts: 2,927 Member No.: 3,861 Joined: December 18, 2005	What you can't, is to connect the input and the output of the LS04 together. This is called a shortcircuit, since the LS04 is inverting. What you try to do with the diodes and the resistor network, is also escaping me. Putting an inverter between the 147 and 247 is correct if you want to display the numbers from 0-9. You should also be aware that the priority is fixed from 0 to 9. If you want to turn off the display you should use the 'blank' input on th LS247 to do this. TOK -------------------- Light travels faster than sound. That's why some people appear bright until they speak!

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