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The newer ipod touch has a better screen so everything shows up better. Plus they have improved the battery life.
Over the last ten years the iPod has basically changed in: Memory, performance, and user interface. Some of the fist iPods only had 5 GB memory. Now they have iPods as large as 160GB. Also the fist iPod used a click-wheel and was large and heavy. Now there is a Nano that is small and holds a lot and the iPod touch that uses a 3.5 Multi-touch display. To see the changes try Wikipedia or Google image search: iPod, original iPod, iPod touch, iPod classic to see the physical changes.
nano, giggy, touch, touch 3, phone, ipad, phone 4, computers, tv
A touch-screen is an input device - the computer reacts to the choice you make by touching the screen.
yes it has changed over many years
Because people's interest has changed over the years.
Wave rock has changed over the years because it has changed colour
This is impossible. A PSP screen surface is a sheet of plastic over the LCD layer, it doesn't have the sensors for it to be able to function as a touch screen.
has hats changed over the years
Place your hand over the whole screen for 3 seconds. The touchscreen will "recalibrate".
Computers have changed in many ways over the years. Technology has advanced< and it has become more easy to do stuff!
it changed by... well it changed... It just changed!