none. it is all the same from 1902... jk gotcha
None, since there is no such thing.
One of the improvements that has been made to the calculator since the invention of the device is that calculators are much smaller now. Another improvement is that many of them are solar powered.
the futher improvements that will be made to the ipod could be water proof and no headphones needed
No telephones were not made before he died. In fact he invented them New models and improvements to the telephone have been made since Bell died
kuf
tacos
Helicopters started to be manufactured in the 1940's, and continued improvements were made through about 1986, when the bottom fell out of the aviation market. Since then, some small improvements have been made, with most of them coming in the electronics/ avionics packages that include computer power.
different materials
everything has changed on the ipod
That would be Nintendo that made the 3DS console. The first consoles were released back in mid-2011. They've been making improvements to the console ever since it was released.
Performance improvements have been made in WinZip 7 including improved daily statistics performance, and a smaller navigation widget. A number of security fixes have been implemented to.
I will not answer your question!