Simple Digital Counter Help

Losing_grip · Post by **Losing_grip** » 20 Oct 2007, 19:40

Ok basically my teacher want us to make this thing...

He just gave us the link and said "Make this"

http://www.delabs-circuits.com/cirdir/t ... 00021.html

But still , im confused... like what stuff do i need etc.

Any help would be highly appreciated.

Thanks!

Post by **bad_brain** » 21 Oct 2007, 04:51

hm, I will look up the parts later if I have some time, but this seems to be a job for floodhound....

Post by **computathug** » 21 Oct 2007, 10:39

ok i will take a look at this as well but i wont be able to till tonight as im busy till then but everything you need is on the page. Read through it and have a play with the settings.

Post by **floodhound2** » 22 Oct 2007, 14:30

Oh hell
I remember making one of these or at least one like it. I had to make an alarm clock using digital gates. I would love to help you but you will need to give me more details.

For example: did he give you a guide line for how many or what types of IC's that you have to use?

How many digits are you wanting to light up?
PLEASE give me all your questions...

Post by **floodhound2** » 22 Oct 2007, 14:48

From what i gather all the parts are simple and i will briefly explain them.

Code: Select all


- IC1 looks like a 7 segment display drive. Basically in this arraignment it is an IC that can drive a seven segment display using only 4 bits as the input. Your lucky your teacher did not make you design the circuit without this IC.
  
- IC2 is an Synchronous up/down counter,binary/decade counter. It takes a clock pulse or button input and increments it; sending out 4 bits to IC1 that in turns translates it to the display as a number "in base 10"

- IC3 is a quad NAND IC that is being used cleverly as a clock as well as a flip flop denouncer because of the human input.

Now all of this is being translated without the data sheets and just off my memory. I am 99% sure i have this correct but as the A student that you are you can find the data sheets and confirm my post.

If you need more help please ask. I get far to eager to make digital shit and this is a great building block towards digital understanding.

Post by **floodhound2** » 22 Oct 2007, 14:55

Now i am spamming the fourms.

P.S. If you need the parts PM me and ill send you them free. I have hundreds of IC's and i don't mind helping a fellow suck-o member.

Losing_grip · Post by **Losing_grip** » 24 Oct 2007, 09:35

Sorry if it took me years to reply. Been busy lately , Anyway anything will do ,cuz i think my teacher just gave us a quick and hard project that he doesn't even know how to make one.

Aight , kidly pm me the parts

Thanks!

Post by **floodhound2** » 24 Oct 2007, 10:03

I can PM you the parts but they are already listed in the schematic. If you want similar parts i can send them to you, but mostly i need to know the goal of the project.

Does he want you to make a clock? This looks like 1 section of a clock
Does he want you just to light up a 7 segment display ?
I need more information...

Losing_grip · Post by **Losing_grip** » 24 Oct 2007, 10:12

The goal of the project is to make a clock.
Hehe... Luckily the deadline is pretty far...Nov.26 =]