Miniaturized devices such as cameras and telephones are examples of now-common technologies that just a few years ago most of us rarely encountered outside the fictional world of thrillers. Miniaturized personal computers are the next logical step.
In the revolution of miniature computers in 2003 at ITU Telecom World exhibition held in Geneva, the Tokyo-based NEC Corporation displayed a conceptual prototype named as “PEN STYLE PERSONAL NETWORKING GADGET PACKAGE” or P-ISM. This is the forthcoming computers you can carry within your pockets.
P-ISM is a gadget package including five functions: a pen-style cellular phone with a handwriting data input function, virtual keyboard, a very small projector, camera scanner, and personal ID key with cashless pass function. . This "pen sort instrument" produces both the monitor as well as the keyboard on any flat surfaces from where you can carry out functions you would normally do on your desktop computer.
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