On 1 May, 13:54, whisky-dave wrote:
On Wednesday, May 1, 2013 12:21:38 PM UTC+1, wrote:
On Wednesday, May 1, 2013 11:11:28 AM UTC+1, whisky-dave wrote:

On Wednesday, May 1, 2013 12:33:51 AM UTC+1, wrote:

On Tuesday, April 30, 2013 11:35:49 PM UTC+1, The Other Mike wrote:

If the government keep their stupid fingers out, it won't be long before appliances with this feature are available for an extra £5.

No you'll be entered into a free prize draw....

*An 8 bit cpu can respond to frequency,

Not that easily, and I doubt using that method would be very successful.

its not hard to divide the clock frequency down to 50Hz ..

But you need a dedicated clock you can;t use the average MPUs clock as it's too inaccurate,

It's as innacurate as the timebase used, whether it's an MPU or an
RTC. A crystal or ceramic resonator will do nicely.

you need a proper RTC,

There is nothing inherently accurate about RTCs.

you do know that computers keep pretty crap time unless they get it from a server.

Hint: What do you think keeps the time in your PC? That's right it's
an RTC which blows your argument out of the water.

You wouldn;t use that method anyway as you need to mearuce the actual frequency of teh main not simulate it.

Whose simulating it?

MBQ