Post by thread:PIC-related brainteaser

Here's a PIC-related brainteaser, just to add fuel to the fire; A device contains only two off-the-shelf components, is powered from an external constant-voltage supply, and has an input-output transfer function that looks like the first 180 degrees of a sine wave. The output units are volts. What are the input units, and how many digits are required to express the full input range? Bonus question - why is this PIC-related? -- Clyde Smith-Stubbs | HI-TECH Software, | Voice: +61 7 3354 2411 spam_OUTclydeTakeThisOuThitech.com.au | P.O. Box 103, Alderley, | Fax: +61 7 3354 2422 http://www.hitech.com.au | QLD, 4051, AUSTRALIA. | --------------------------------------------------------------------------- For info on the World's best C cross compilers for embedded systems, point your WWW browser at http://www.hitech.com.au, or email .....infoKILLspam@spam@hitech.com.au

part 0 572 bytes I don't suppose you'd tell me the answer if I asked nicely? ;-) The question on Fast Forwards page (under "what we want") has a simple answer. Squircle. regards, - Andy. ************************************************************* Andrew David Senior Project Engineer - Software Ultronics Division AndyKILLspamUltronics.co.uk Ultra Hydraulics Ltd. Anson Business Park Cheltenham Road East Staverton Glos. GL2 9QN Tel.: (01452) 858376 (Direct) Ultronics Fax.: (01452) 858377 *************************************************************

Andrew David <.....AndyKILLspam.....ULTRONICS.CO.UK> wrote: > Clyde, > > I don't suppose you'd tell me the answer if I asked nicely? ;-) Well, since only Kalle has solved it so far, I will enlighten the rest of you. The input units are degrees rotation, and the number of digits required is two - thumb and finger. (Or if you use a slider pot, it's mm and one). The two components are a pot and a resistor. The exact circuit is left as an exercise for the reader :-) Oh, the bonus question; the answer is nothing - I lied about it being PIC related. Sorry :-) -- Clyde Smith-Stubbs | HI-TECH Software, | Voice: +61 7 3354 2411 EraseMEclydespam_OUTTakeThisOuThitech.com.au | P.O. Box 103, Alderley, | Fax: +61 7 3354 2422 http://www.hitech.com.au | QLD, 4051, AUSTRALIA. | --------------------------------------------------------------------------- For info on the World's best C cross compilers for embedded systems, point your WWW browser at http://www.hitech.com.au, or email infospam_OUThitech.com.au