No one would deny that Jobs redefined the touch screen with the original iPhone in Macworld 2007. The original iPhone used sleek capacitive touch screen to pair with iOS’s awesome animations, and also used swipes to substitute taps. Why its use of two fingers to flash a large picture was impressive? That must because the touch screen brought “the way everything was supposed to be.” In 2008, The Economist published an article titled The Future of Touch, in which it argued that, despite the success of the iPhone with its excellent touch experience, it would be computers, but not handhelds, that would benefit most from touch technology.  More than a decade later, touch-screen laptops have indeed begun to catch on. However, contrary to The Economist‘s predictions,...

Once I have watched a documentary when I was a child, which explained the division of labor behind the film. Photographers are often accompanied by a focus puller, like every golfer will have a caddy. This pattern is almost standard in the film industry. The focus puller mainly ensures that the focal plane of the shot meets the needs of the director. That is: the subject is clear. It seems a quite simple work, but not everyone can be competent. This job has a high demand on the movement speed of the focus and the switching accuracy. Without the muscle memory from years of practices, it’s hard to become perfect, and to...

Apple has changed its iPhone charging port to Lightning cable since iPhone 5. Compared with the previous 30pin port, the size of Lightning is smaller and blind plug is also supported. At that time, Android phones or most other smart devices were still popularizing micro-USB ports, which lagged behind Apple’s Lightning port in terms of both form and user experience. Nearly a decade has passed, Android has been upgraded to USB-C port, while iPhone is still Lightning. It has to be said that the former has “come from behind” in terms of form, performance and experience. However, facing the unchanged Lightning port after nine years of its invention, the discussion on the abolition of...

PWM, as known as pulse width modulation technology, has applications in many ways. In order to improve your comprehensive understanding of PWM dimming, this article will begin with the persistence of human vision and the common stroboscopic in life. Persistence And Stroboscopic of Vision Strobe is a perceptible flickering effect that usually occurs when a phone is shot towards an LED light source. Have you ever seen a stroboscopic image from a phone camera shooting an LED light source, but it’s normal when viewed directly with the naked eye? You can do a simple experiment by turning on your phone’s...

We use our brains to think every day, but the human brain is so complex, subtle, and mysterious that we still know very little about it. However, the development of brain imaging technology over the years has brought new advances to scientists, who study how the human brain works by using the device like kernel flow. What is Kernel Flow? Researchers at Kernel, a neurotechnology startup in the United States, have developed a wearable device called Kernel Flow, which is a brain-reading helmet. This helmet device uses TD-fNIRS (Time Domain Functional Near Infrared Spectroscopy) technology to measure brain activity by...

When purchasing routers, you can often see advertisements from brand routers that say “N high-power FEMs are used, and the signal is super strong”. So what is front end module (FEM)? Is the signal really strong when router comes with front end module? So we’re going to talk about this FEM that replaced “multi-antenna” as the new term for router advertising. What is a front end module? FEM, the abbreviation of Front-End Modules, WiFi-FEM refers to a series of RF front-end circuits used for WiFi communication, such as power amplifier (PA), RF switch, low noise amplifier (LNA) and module with...