What is multi-touch technology?
What is multi-touch technology?On touchscreen displays, multi-touch refers to the ability to simultaneously register three or more distinct positions of input touches.It is often used to describe other, more limited implementations, like Gesture-Enhanced Single-Touch, Dual-Touch or real Multi-Touch.
Multi-touch has been implemented in several different ways, depending on the size and type of interface.
From physical point of view there are:
* Resistive Touch
* Surface Capacitive Touch
* Projected Capacitive Touch (PST)
* Bending Wave Touch,
* Surface Acoustic Wave Touch (SAW),
* Infrared Touch (IR)
* Optical Touch technology.
The most popular form are mobile devices (iPhone, iPod Touch), tables (Microsoft Surface) and walls. Both touchtables and touch walls project an image through acrylic or glass, and then back-light the image with LEDs. When a finger or an object touches the surface, causing the light to scatter, the reflection is caught with sensors or cameras that send the data to software which dictates response to the touch, depending on the type of reflection measured. Touch surfaces can also be made pressure-sensitive by the addition of a pressure-sensitive coating that flexes differently depending on how firmly it is pressed, altering the reflection.Handheld technologies use a panel that carries an electrical charge. When a finger touches the screen, the touch disrupts the panel's electrical field. The disruption is registered and sent to the software, which then initiates a response to the gesture.
In the past few years, several companies have released products that use multi-touch. In an attempt to make the expensive technology more accessible, hobbyists have also published methods of constructing DIY touchscreens.
The largest Multi-Touch trackpad ever for Mac desktop computer.
Desktop users, your time has come. The new Magic Trackpad is the first Multi-Touch trackpad designed to work with your Mac desktop computer. It uses the same Multi-Touch technology you love on the MacBook Pro. And it supports a full set of gestures, giving you a whole new way to control and interact with what’s on your screen. Swiping through pages online feels just like flipping through pages in a book or magazine. And inertial scrolling makes moving up and down a page more natural than ever. Magic Trackpad connects to your Mac via Bluetooth wireless technology. Use it in place of a mouse or in conjunction with one on any Mac computer — even a notebook.
Magic Trackpad is just like the trackpad on the MacBook Pro — but bigger. It’s made with the same advanced touch-friendly and wear-resistant glass surface. But with nearly 80 percent more area, it’s the largest Multi-Touch trackpad made by Apple. So there’s even more room for you to scroll, swipe, pinch, and rotate to your fingers’ content. And since the entire surface is a button that clicks, you can use it in place of a mouse.
It fits in perfectly.
Magic Trackpad features the same sculpted aluminum design as the Apple Wireless Keyboard, and side by side the two sit flush at the same angle and height. Go from typing to gesturing in one motion, or do both at the same time. How perfect is that?
System Requirements
* Bluetooth-enabled Mac computer
* Two AA batteries (included)
* Mac OS X Snow Leopard v10.6.4 and latest software update
Labels: Advanced computer news