In our daily life, we often hear and see that some devices have multi-touch functions, such as mobile phones, tablets, all-in-one computers, etc. When manufacturers promote their products, they often promote multi-touch or even ten-point touch as a selling point. So, what do these touches mean and what do they represent? Is it true that the more touches, the better?
What is a touch screen?
First of all, it is an input device, similar to our mouse, keyboard, description instrument, drawing board, etc., except that it is an inductive LCD screen with input signals, which can convert the functions we want into instructions and send them to the processor, and return the results we want after the calculation is completed. Before this screen, our human-computer interaction method was limited to the mouse, keyboard, etc.; now, not only touch screens, but voice control has also become a new way for people to communicate with computers.
Single touch
Single-point touch is the touch of one point, that is, it can only recognize the click and touch of one finger at a time. Single-point touch is widely used, such as AMT machines, digital cameras, old mobile phone touch screens, multi-function machines in hospitals, etc., which are all single-point touch devices.
The emergence of single-point touch screens has truly changed and revolutionized the way people interact with computers. It is no longer limited to buttons, physical keyboards, etc., and even only needs one screen to solve all input problems. Its advantage is that it only supports touch input with one finger, but not two or more fingers, which prevents many accidental touches.
multi touch
Multi-touch sounds more advanced than single-touch. The literal meaning is enough to understand what multi-touch means. Different from single-touch, multi-touch means supporting multiple fingers to operate on the screen at the same time. At present, most mobile phone touch screens support multi-touch. For example, if you try to zoom in on a picture with two fingers at the same time, will the picture be enlarged as a whole? The same operation can also be applied when shooting with a camera. Slide two fingers to zoom and enlarge distant objects.Common multi-touch scenarios, such as playing games with iPad, drawing with a drawing tablet (not limited to devices with a pen), taking notes with a pad, etc. Some screens have pressure sensing technology. When drawing, the harder your fingers press, the thicker the brushstrokes (colors) will be.Typical applications include two-finger zoom, three-finger rotation zoom, etc.
Ten-point touch
en-point touch means that ten fingers touch the screen at the same time. Obviously, this is rarely used on mobile phones. If all ten fingers touch the screen, won't the phone fall to the ground? Of course, due to the size of the phone screen, it is possible to put the phone on the table and use ten fingers to play with it, but ten fingers take up a lot of screen space, and it may be difficult to see the screen clearly.
Application scenarios: mainly used in drawing workstations (all-in-one machines) or tablet-type drawing computers.
A brief summary
Perhaps, many years later, there will be unlimited touch points, and several or even dozens of people will play games, draw, edit documents, etc. on the same screen. Just imagine how chaotic that scene would be. In any case, the emergence of touch screens has made our input methods no longer limited to mouse and keyboard, which is a great improvement.
Post time: Jun-11-2024