Logic Outputs Problem in 7493 IC

[marconi]

Marvellous, Brilliant video of your work.

 

[_q12x_]

Marvellous, Brilliant video of your work.

Hahaha, thank you ! And I am very glad if you really mean it and if you really like it. I'll take it anyway, haha.

 

[marconi]

Hahaha, thank you ! And I am very glad if you really mean it and if you really like it. I'll take it anyway, haha.

Yes I did. You remind me of this industrious inventor:

TheBoy Who Harnessed the Wind by Kamkwamba, William ( Author ) ON Mar-04-2010, Paperback by Kamkwamba, William: Good Paperback (2010) | Goldstone Books - https://www.abebooks.co.uk/TheBoy-Who-Harnessed-Wind-Kamkwamba-William/31128878810/bd?cm_mmc=ggl-_-UK_Shopp_Tradestandard-_-product_id=UK9780007316199USED-_-keyword=&gclid=CjwKCAiA2fmdBhBpEiwA4CcHzanAZET6CMZvLZI6oUFkS_gqF5Kk3bwrxpBjXa2KtMXOrqeDSL1D9BoCM64QAvD_BwE

The Boy Who Harnessed the Wind - Wikipedia - https://en.wikipedia.org/wiki/The_Boy_Who_Harnessed_the_Wind

Great book and film.

 

[_q12x_]

I downloaded the movie and I'll have to watch it these days. Hope is good...

 

[_q12x_]

Im starting to make the (card)boards for the 'display' counter (0-15).
Very retro looking and feeling.
A lot of work. I only finished #1 module and tested on my breadboard and working and I have a GO for the rest.
Hope you like it.

 

[marconi]

I think I am a little behind on your progress. Have you tested the 93 counter with all 16 LED driver decoder circuits sequencing one by one 0 to 15 and then repeating? The last video showed 0 to 4 (if I remember correctly).

 

[_q12x_]

Yes, I had a (wiring) problem on #5 and I figure it out. All messed up. Thank god it wasnt a logic problem. And after I seen that #5 is working, I get courage and filled the full length of the breadboard , to #8 and all worked just fine. I didnt make it to 16 since I dont have that many CLEAN diodes (legs). So I get another courage, round 2, and Im starting and HOPING that these cardboard ccts will do their job. I plan to make it until 8, like I did it on breadboard, and then put that in front and after it, on the breadboard to make it to 16 and this way make a FULL count of all 16 of them. Im also making a movie about it... from pieces filmed in time, as I progress.
Thanks for the interest. It looks nice, right? Hehe. But is a ton of work. Hope I will make it today... Mmmm

 

[marconi]

https://www.ti.com/lit/ds/symlink/cd54hc4514.pdf?ts=1673475439656&ref_url=https%3A%2F%2Fwww.google.com%2F

You will be pleased to learn that your project does the work of the 54/74 - 4514 ic which decodes a 4 bit binary word into one of 16. It is also called a 4 to 16 line demultiplexer. The datasheet is attached for you to study. Unfortunately, the decoder box on page 2 does not show any detail but you have worked out what is involved. Well done Sir.

 

[_q12x_]

the decoder box on page 2 does not show any detail but you have worked out what is involved.

I dont understand what you mean by that... You mean that I figured out how to connect these 4inputs to get my 16 modes ?
I actually searched and didnt find a BCD for 4 bits(binary) to output 16 modes (decimal). I didnt searched well enough I guess, because here you are with it. Very good that you show it to me !
Are they even bigger that this? with 32 outputs maybe? or 64? That will be cool to see ! Haha.

 

[marconi]

Page 2 of the data sheet at the end of the link shows a block diagram of the internals of the ic.