We could also have the switch be recessed into the side, so it cant turn on/off by sliding on a flat surface. Or we could do it how current graphing calculators do it: a key combination.

I like the idea about the power switch, just so we don't have to pull batteries in the event of a crash.  I do have a hardware question though, where are we getting the materials such as case, keys, covers, ect... that really need to be custom made for a calculator?

the problem is that we need an initial amount of money before we can do anything about making more than one. ie. shark tank.
the problem with this is that we will need to sell the calculators for more than 20 cents more than it takes to make them.
We will need some real investor's  but never let any one person invest enough to be part of the project.

I am all for the Pandora way.
but different.

Ok, everyperson who helps/invests will be part of the advertisement.  Each will get to own/buy/borrow an ot calc, and give it  to one of their math teachers for a year, requesting that they show it off to other teachers and students, and if kos is better than ti's, recommend it to students getting a new calc.

Remember, selling for the price to make will make a product live then die,
Now if you sell it for PtM plus part one of one more, the product will thrive.

Quote from: fb39ca4 on August 07, 2010, 08:16:21 pm

We could also have the switch be recessed into the side, so it cant turn on/off by sliding on a flat surface. Or we could do it how current graphing calculators do it: a key combination.

the problem with that is if the calc freezes.  If we do go with the rechargeable battery, (all for it! ), we should a screw battery door, (probably a Philip's head)  That said, we should have a complete way to turn off the power without removing the battery.

sorry if i am to presumptuous.

we could have a reset button on the back

Can we stop this discussion here, and move it to either the z80 or arm topics, whichever calc it is?

Okay.  Then, we can discuss the z80 in the z80 topics, and arm in the arm topics. Thanks.

Question: Have we found someone to put the calculators together properly? Because I think that it would be a shame if all the plans were worked out to perfection and the calculators couldn't be made because of that.