Negative Twisted Ring Counter

Thread Starter

MrL

Joined Oct 21, 2009
46
Hi,

This is a very small part of my project. A typical 4-bit twisted ring counter gives four positive-going strobes, as shown below in the right hand diagram:

http://en.wikipedia.org/wiki/Ring_counter

I was just wondering what the waveform would be from a circuit built to give four negative-going strobes?

Thanks.
 

SgtWookie

Joined Jul 17, 2007
22,220
Well, with TTL and CMOS level logic, you basically have two choices: 1 or 0. There IS no -1.
There are also tri-state devices, which have high impedance mode; primarily used for connections to data buses.
 
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