Hi,
I am building a circuit which includes a 7447 BCD Decoder.
It worked before, I was able to see the display change numbers, but all of sudden, I guess by changing other things, I lost it!!!
I have been working for a while trying to figure it out, but no success.
Anyway, I disconnected all my wires, including my 2 display 7 segment LED, and resistors, except Pins 1 (Vcc), 8 (Gd), 3 (LT) and my 4 Binary Inputs, and using an LED light, I have been testing my outputs at "a" through "g".
I noticed that my LED turns on at my Inputs, but I am not getting any LED On at any of my outputs "a>g".
Is this a feasible test? My goal is to troubleshoot why my 7 segment is no longer displaying anything.
I am sending in inputs, but not seeing outputs.
The circuit is below. By the way, pins 4,5 are not connected to anything.
Please help.
Thanks
Sala
I am building a circuit which includes a 7447 BCD Decoder.
It worked before, I was able to see the display change numbers, but all of sudden, I guess by changing other things, I lost it!!!
I have been working for a while trying to figure it out, but no success.
Anyway, I disconnected all my wires, including my 2 display 7 segment LED, and resistors, except Pins 1 (Vcc), 8 (Gd), 3 (LT) and my 4 Binary Inputs, and using an LED light, I have been testing my outputs at "a" through "g".
I noticed that my LED turns on at my Inputs, but I am not getting any LED On at any of my outputs "a>g".
Is this a feasible test? My goal is to troubleshoot why my 7 segment is no longer displaying anything.
I am sending in inputs, but not seeing outputs.
The circuit is below. By the way, pins 4,5 are not connected to anything.
Please help.
Thanks
Sala