T&L Publications

Places like California want to start charging drivers by how many miles per year they drive. I believe they are doing this in the UK already. I don't know where you heard that, but it's not true. We do have a "congestion charge" in central London (and in some other cities, I believe) and we have a ...

I seem to remember that you used to be able to get 16 bit wide EPROMs.

Philba, my post was slightly tongue in cheek, but the bit about billions is true. I like americans, I have an american wife, from Washington State, like you!

Actually the British and the American billion are one and the same thing. We (the British) adopted the American version many years ago to save confusion. Obviously it didn't work, since so many people still believe that the British billion is 10E12. Incidentally, can you imagine America doing such a...

<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr>Green Vision is ten times the strength of red, blue is ten times that again. <hr></blockquote>
Unless you happen to be a human, in which case your eyes will be most sensitive to the yellow area of the visual spectrum.

<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr> Take advantage of the "no memory" characteristic and leave them trickle charging on the shelf until you need them. I mean like 20ma up to 1.4 Volts. <hr></blockquote> From what I have read, it is not a good idea to le...

This is something that always confuses me. If different LEDs produce different amount of light with the same power consumption, and they "don't generate much heat", then where does the rest of the power go in the lower-light-output LED?

Indeed. I believe the modulation scheme is slightly different as well.

Here in the UK the CID is sent before the first ring. Although it is preceded by a line reversal. Assuming you have some sort of micro involved, you could save the bit stream and then re-modulate it to send it to the selected phone. The modulation part should be much easier that the de-modulation.

Well I'm a little more cynical than most, so I don't believe that tidal energy is "free". Seems to me that if the tides are caused by the rotation of the Moon around the Earth and the rotation of the Earth around the Sun (do I have that the right way round? I'm sure someone will disagree with the ne...

<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr>Whenever a current is generated in a conductor there is a force generated as well. Any force applied to an orbiting spacecraft will effect it's orbit. It's probably a good thing that the conductor loop broke because it...

The word "numeracy" was actually invented by British prime minister Harold MacMillan, so I guess you should also credit him with "innumeracy". I like to think of language as an instrument, and as such I think it's worthwhile to try and play to the best of one's ability. I would be very reluctant to ...

<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr> quote:Why does the 16F84 have a status register in BANK 0 and also in BANK 1?[/ <p>Because the Pic is a risc based processor and uses the Harvard style architecture (data memory and program memory are on two different...

Somebody may have mentioned this already, I can't be bothered to wade through all the posts, but... On certain microcontrollers there is a pull-up REGISTER which is used to enable or disable built-in pull-ups on a pin-by-pin basis. They're not usually resistors, they're FETs which source a fairly lo...