| One must have observed certain devices such as | | | | enhancement isn't just in terms of utility but also in |
| iTouch, which responds with a flip-like function when | | | | terms of performance and efficiency of the same |
| the user moves his/her fingers across. If the | | | | system. |
| functionality ensures a ‘cool' experience for the | | | | More about accelerometer |
| user, the technology behind is the accelerometer. The | | | | Several applications can be programmed keeping in |
| accelerometer in general tracks the movement or | | | | mind the working of the accelerometer. For example, |
| the tilt of the device with respect to a reference | | | | applications of J2ME and accelerometer (i.e. software |
| axis. The iTouch accelerometer uses the variations in | | | | and hardware) can work in tandem to produce a |
| electrical current along with silicon mass and spring to | | | | different application. For example, the movement of |
| track its own movement. The silicon springs gauges | | | | legs during workouts can be tracked using an |
| the movement of the current through the silicon | | | | accelerometer and can be stored in the software for |
| mass. | | | | future use. That is just an example and one can |
| By doing so, it measures the position of the silicon | | | | expect a lt of such utilities to be available in the |
| mass and causes a corresponding fluctuation in the | | | | market or in the near future. J2me is a platform that |
| electrical current. To summarize the process - when | | | | aims at small embedded and wireless devices which |
| the silicon moves, the silicon spring tracks it and | | | | have memory limitations. Programs in Java can be |
| changes the electrical current, which results in a | | | | written by the developers easily. J2me, due to its |
| different signal being sent to the iTouch device | | | | inherent advantages such as reliability, platform |
| indicating it to make a corresponding change. An | | | | independency, robust security, friendly user interface |
| example of a change can be a change of display | | | | and so on has emerged as a popular technology for |
| from the landscape mode to the portrait mode and | | | | developers. |
| vice-versa. More advanced applications also exist that | | | | With 3G coming into the market, one can expect a |
| use the accelerometer for its functioning. The latest | | | | lot of application that makes use of features of 3G |
| iTouch version is equipped with a much faster touch | | | | and accelerometer. |
| screen and an accelerometer. So to speak, the | | | | |