on this new website (July 2010). Here the properties of RS flip-flops are fully described.On this basis, a previously unknown pulse circuit is presented, which again provides the basis for a new asynchronous JK flip-flop / JK latch.
But why alternative?
Alternative, because the properties described here are fundamentally different in one significant detail from the official doctrine (at the time of publication of this website!). Thus this representation is with one exception (in my opinion has joined http://www.elektronik-kompendium.de) contrary to all (known to me) explanations in reference books and the internet. On the following pages is also clear that the hitherto customary representation resulted in no problems. But It restricts the possibilities of RS flip-flops in consequence of incorrect conclusions.
This page is also designed for those who resist taking a holistic view of the properties of the RS flip-flop. Either they do not understand my comments or maybe they will not understand it. And it is not to difficult.
So quite honestly, the two new circuits (Ideal pulse circuit and asynchronous JK flip-flop / JK latch) are theoretically not to be understood simply, even for experts. Because some expert comes quickly to the conclusion, "..but there must surely occur RACE CONDITIONS, that can not work at all".. But it works!! And why it still works, is to be explained on this site. Whoever it theoretically not immediately understand can simply test the circuits practical, or even easier to use the attached simulation program (excel file).
Under the menu RS flip-flop, I investigate the different views in the literature and the Internet.
1. Most recently - Some have apparently already responded! (As of 11/01/2010)
The actual release for the creation of this site has been the negative reaction of apparently co-responsible of the German and English Wikipedias to my discussion posts (since 2007), in which I requested to correct the representations of the RS flip-flops. Since you do not respond there I had to do it yourself!
Interest in Fibonacci numbers and their applications for search?
Here is my very simple python-program for n-dimensional Fibonacci-Search.
If you look today (Nov. 2010) to the Wikipedia pages, is a significant change note.
In the German Wikipedia will appear in the truth table and in the description no longer with R=S=1 (NOR), the reference to meta- or instability. Unfortunately, at this point is to find but still the misleading example of a seesaw. This still shows R=S=1 has instable.
In the English Wikipedia is not discussed more on the way R=S=1. The former truth table, which identified at R=S=1, no change in the previously current state, is missing.
On 01/01/2011, new changes were made and so on. For instance R=S=1 is now called 'restricted combination' (Feb. 2011)
Further changes should not be mentioned here.
2. Objective and conclusions
The statements on this website shall show that the standard definition or description of the RS flip-flop should be revised. Furthermore, it should be clear how to built up an ideal pulse circuit without RC combination. This one is for instance the basis for the development from asynchronous JK flip-flops / JK latches. Furthermore there are easy ways to build monolithic circuits. The circuits shown in this site are everywhere of advantage where possible high frequency limit must be achieved or where there is no clock signal, etc.
The circuits were first published on 09.05.1984 under economic Patent WP H 03 K / 2432 692 (now deleted)
Developer of the circuits: Home Owner Klaus-Eckart Schulz
The circuits may be reproduced, however, the reference to the developer is required.