So im trying to create a circuit that pulsates a code in binary.
I've done a truthtable and done some karnaugh diagrams so I know what kinds of gates etc. to use.
The circuit consists of five 7474's and alot of gates.
Things are working out just fine but for some reason the PSPICE simulator gives me some wierd output, everyhing starts out fine, the five signals are low but when they are supposed to change they are unknown(they become double red lines in the simulator).
Im adding pictures of the error aswell as the circuit.
Any help at all will be greatly appretiated, cause I have no idea what's wrong.
Best regards
Digifan
I've done a truthtable and done some karnaugh diagrams so I know what kinds of gates etc. to use.
The circuit consists of five 7474's and alot of gates.
Things are working out just fine but for some reason the PSPICE simulator gives me some wierd output, everyhing starts out fine, the five signals are low but when they are supposed to change they are unknown(they become double red lines in the simulator).
Im adding pictures of the error aswell as the circuit.
Any help at all will be greatly appretiated, cause I have no idea what's wrong.
Best regards
Digifan
Attachments
-
10.7 KB Views: 22
-
302.6 KB Views: 17