Help with my project please

E

ElectricalInginer

New Member
I need help with the following project:
Fixed frequency divider by 33. The counter used will have the synchronous R input. Only circuits will be used
from the HCT/HC series. The oscillator will provide two rectangular signals with frequencies of 5Hz and 435kHz respectively
and a manual clock signal.
The power supply model and the clock generator needs to be like i did in the project. I need someone to help explain how to do this properly, in proteus.
 

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this is the image we get for the projet, on the left is "oscillator", middle "7 bit counter" on the right Q0 to Q6 are 7 LED's and dows is a "status detector" or something like this.
 
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Another user is doing the exact same project...

See here:

Uni Project Advice and Help

I need to do the following for a project at uni: Fixed frequency divider by 33. The counter used will have the synchronous R input. Only circuits will be used from the HCT/HC series. The oscillator will provide two rectangular signals with frequencies of 5Hz and 435kHz respectively and a manual...
www.electro-tech-online.com
 
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The other student using an analog method where you need a tolerance stackup error less than 1/87000 to reset will find it expensive to find RC components trimmed to better than this tolerance.

So there are several methods to generate 5 Hz (not kHz) and 435 kHz from a manually tuned input clock.

Input 435 kHz
1. Design a synchronous counter for 87,000 counter as 43500 & 2

If you need an odd number counter it implies you will need to use both edges of the clock to *2f.
 
Last edited:
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The unrar applications like 7-zip cannot compromise your OS by just opening a RAR file to examine the contents. Your advice is more sensible for file types that modify the OS.
 
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danadak said:
Looks like earlier WINRAR versions had that problem.....
Click to expand...
I doubt any are true positives these days. One just has to look at the benign file extensions to tell what isn't enclosed.

Winrar products infected? False-positive? - Virus, Trojan, Spyware, and Malware Removal Help

Winrar products infected? False-positive? - posted in Virus, Trojan, Spyware, and Malware Removal Help: Hi, Im new here. I dont know if this is the correct board or if its formatted correctly. Please be patient. Ive had some viruses and PUPs swarming my computer—vaguely remember Win32...
www.bleepingcomputer.com

Perhaps eons ago https://www.pcmag.com/news/winrar-has-serious-flaw-that-can-load-malware-to-pcs

7-zip is my goto unRAR app.
 
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"I doubt any are true positives these days"......
Click to expand...

Seems like there are more concrete actions and changes on this, recent I might add, 2023 timeframe.

Government-backed actors exploiting WinRAR vulnerability

Google\u0027s Threat Analysis Group analyzes recent state\u002Dsponsored campaigns exploiting the WinRAR vulnerability, CVE\u002D2023\u002D38831.
blog.google

WinRAR Flaw Let Hackers Run Programs When Opening RAR Files, Patch Issued

Grab WinRAR version 6.23 now to plug this severe vulnerability.
www.tomshardware.com


Update now! WinRAR files can be abused to run malware

A new version of WinRAR is available that patches two vulnerabilities attackers could use for remote code execution.
www.malwarebytes.com
 
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