yes,a dumb design by dell not to have caps light and its a fairly new laptop ,but thats not the problem with spelling. Mine i write too fast and dont double check my words.

LOT of guys complain about my spelling,but i see many other posts that have the problem too.

On arduino sensors every one can be used on EZB only need a scripts for them.

@Slim (and @Josh) Digital ports can be used for serial and reading digital (on or off) signals and reading PWM.

Josh summed it up, it can do practically everything you can imagine.

Also not forgetting the I2C bus that's also supported, some items natively, others via script and the I2CWrite and I2CRead commands.