🚀 go-pugleaf

In article <2MAX7.8134$rt4.1080@afrodite.telenet-ops.be>, 
W.VandenEede@Pandora.be says...
>
>Does anybody have more information on the protocol in use by this serial
>DCF77 clock? It comes with PCDCFDOS.EXE but no sourcecode ... the
>documentation states it uses 9600, even parity, 2 stopbits and 8 databits,
>but the connector has 4 wires connected and it does not work with TX, RX 
and
>GROUND only ... after some experimenting I cannot find how it works, how 
the
>PC initiates the communication with the clock, somehow it depends on this
>4th wire ...
>
>I'd like to make it work from within a C(++) module ...
>


For those who are living in North America, you should have explained the 
term "Funkuhr". This literally means "radio clock", and is extremely common 
in Europe, but completely unknown in North America (in many ways, we are 
really rather backward here). 

A Funkuhr is a clock or a wristwatch that receives longwave time signals 
(transmitted from a central transmitter) that allows it to keep absolutely 
perfect time. These clocks and watches even automatically change their time 
when summer time (daylight saving time) starts and ends. 

I first started seeing these things in Germany about 11 years ago (and STILL 
no one has ever heard of them here!). Now the prices have come down so much 
that a small bedside alarm clock with built in receiver, costs only $20.00. 
Nearly everyone has one. What amazes me is that a wristwatch (such as those 
made by Junghans and others) which looks no different than an ordinary 
analog watch, can incorporate this feature.

Bob.