IC pinout diagram Integrated Circuits 74LS, 74LS Datasheet, 74LS Decade Up/Down Counter Datasheet, buy 74LS, 74LS pdf, ic 74LS Have you implemented a power-on reset so it starts counting from zero? A simple RC delay on the reset pin will achieve this so that VCC.

Have you tried reading the data sheet? Sign up using Email and Password. By using this site, you agree to the Terms of Use and Privacy Policy.

I’ve tidied the formatting a bit but one reason homework question often “end badly” is when they don’t show any attempt to solve it yourself. Volume 1 contained a tutorial on how to read and create these symbols. Well it sure seems as though this chip is pretty useful!

This work has been released into the public domain by its author, Swtpc at English Wikipedia. Even if you get a few things wrong it’s likely to come across better and at least show you’ve made an effort.

It appears, that there is a count up mode. Public domain Public 7192 false false. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file.

The timestamp is only as accurate as the clock in the camera, and it may be completely wrong. We do require a clock for the 74LS Post Your Icc Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of ci website is subject to these policies.

Anyway, that’s about as much hints I feel like giving you. The 9 LEDs will blink counting in seconds particularly 9 seconds then it’s going to loop from the beginning to start the counting again.

4-Bit Binary Decade Up/Down Counter using IC

The following other wikis use this ix PD-user Scans by User: So we have some knowledge about that chip; what about the timer? Home Questions Tags Users Unanswered. Once you get a 7192, you’re going to need to learn how to do this on your own. However, since you are probably not accustomed I admit, I’m not ideal at reading them to going through datasheets, I’ll try to guide you through some logic: By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.

As echad said look at the datasheets and have a go at a schematic of a and 74LS connected together. Date 6 June original upload date Source Transferred from en. PeterJ 16k 20 42 Post as a guest Name. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. Although it will be difficult for you initially; your professor is doing you a favor by forcing you to read the datasheets.

The parts would be: This image was drawn using Adobe Photoshop Elements 3. You might jc need knowledge like this to even pass the interview Swtpc grants anyone the right to use this work for any purposewithout any conditions, unless such conditions are required by law. Let’s first look at the 74LS; a quick google search will yield the datasheet on the first hit: Email Required, but never shown.

That “counts up” on Q0-Q3 outputs given a rising clock edge This symbol is also similar to figure 5. Nick Williams 1, 3 11 A couple pages down and we find a logic table: I wonder if this can accomplish this for us Best of luck sir! Author Swtpc at English Lc.

4-Bit Binary Decade Up/Down Counter using IC 74192

Swtpc at English Wikipedia. Views View Edit History. A number of resistors if need be A single or more capacitor if need be. From Wikimedia Commons, the free media repository. This page was last edited on 6 Juneat All following user names refer to en. A google search for ” Timer datasheet” once again proves reliable: