Úvodní stránka » Auto-moto » Battery for Apple A1304

Battery for Apple A1304

Andrew Huang and Sean Cross, two self-employed engineers living in Singapore, built their computer around a quad-core ARM Cortex-A9-powered Freescale system-on-chip and a field-programmable gate array (FPGA) – the specs are here. (The pair trust the system-on-chip and the FPGA behave as documented.)Even the display bezel is hackable, with Huang explaining: Anyone with access to an entry-level machine shop can fabricate a custom bezel to accommodate a different LCD, as well as mount additional sensors (such as a camera or a microphone) or additional buttons and knobs.A crowdfunding round via Crowd Supply 18 months ago far exceeded its goals, even though prices ranged from $1,195 to a $5,000 wooden model.The pair were obliged to reject RedHat and Ubuntu because they required black-box drivers for GPU acceleration to draw the pointless desktop eye candy, and opted for a fully free Debian on GNU/Linux with the Xfce4 window manager.We hope eventually to figure out enough of the GPU to let us do 3D graphics with acceleration sufficient to produce a user experience much like that of any mainstream laptop, the guys said.The pair want you to think of it as a piece of lab equipment. A software-defined radio board was developed for the Novena by Myriad RF to avoid using more black-box radio hardware and firmware.As an exercise in producing an open system from scratch, it’s fascinating. The Novena board has already been used as the basis for a crypto key signing box, Cryptech.You can read the duo’s adventures at the IEEE’s Spectrum, here. For what it’s worth, a startup called Purism is doing similar with an x86-based laptop, but it relies on Intel’s closed-source processor initialization firmware, which gives some people the heebie-jeebies.

Analysis Microsoft stubbornly refuses to let go of making hardware, but now the reasons why CEO Satya Nadella has not followed his clear instinct to ditch devices (except Xbox) are becoming clearer.We have analysed many times why Microsoft should not make smartphones and tablets, mainly because of conflicts of interest with the OEM partners which have always been the basis of its model. However, there is the defensive reason that without the former Nokia products, there would be very few Windows handsets at all. The software giant is ill-equipped, in terms of its business model and its capabilities, to be a vendor of mass market hardware.Yet it does need Windows 10 to live up to its promises of spanning every kind of device and screen, which means continuing to provide users, especially in the business sector, with the option of a Windows smartphone.And the Surface range is starting to justify the approach that software platform giants need to create and drive new form factors themselves by showcasing the capabilities of their operating systems on their own hardware. Microsoft has taken that tack in the past, though usually retreating quickly once a particular product gained traction among real hardware vendors (as seen with its Wi-Fi access point, for instance).

Google has done the same with Nexus. Neither of these represents the integrated hardware/platform business model of Apple – briefly chased by Nadella’s predecessor Steve Ballmer, with the resulting failure of the Nokia devices acquisition. Instead they show the need for a new OS to have worthy devices.With the first Surface tablets, it was clear that Microsoft should have left this task to its partners. Google may have complained, when it launched the first release of Android for larger screens, that very few device makers could produce a quality experience to live up to the OS’s potential. But that is not true of Microsoft, which has established and capable customers such as Acer and Asustek.They were vocal in their misgivings about the Windows giant competing with them with Surface.However, between the unloved Surface RT and this week’s launch of the Surface Book, there has been a significant change, partly driven by the emergence of Windows 10 and partly by the decline of the conventional PC. It is imperative that W10 – Microsoft’s last chance to remain a company with its own OS rather than just a multi-platform service provider – succeeds in that post-PC space which is currently being defined, and will include some combination of tablet touchscreens and notebook keyboards, at the base level. There have been all kinds of experiment with these hybrids, but unexpectedly, Microsoft’s Surface Pro tablet-with-keyboard has proved definitive, especially since W10 came along.

To prove that point, we only had to see Apple head-to-head with its old enemy with its launch of the iPad Pro, a clear response to the Surface Pro. Now Microsoft has returned the compliment with the launch of its first notebook, the Surface Book. The dividing line between a professional tablet and a laptop is blurring, but increasingly it seems that, after many experiment with post-PC form factors, this is where the successor to the PC will be found.Both Microsoft and Apple are looking to colonize the space via a pincer movement. Both are now offering a beefed-up tablet with optional keyboard, and an ultraslim laptop, though the MacBook Air does not yet have a touchscreen, and Apple CEO Tim Cook last week insisted that, unlike Microsoft, his firm had no plans to converge its mobile/touch and notebook/desktop operating systems.So it’s back to the good old days of Windows and Apple Mac fighting it out for the business base – though with the critical difference that Microsoft is making its own hardware rather than relying on its PC OEMs. Just as one of the problems for Windows Phone was the conflict of interest between the Microsoft/Nokia alliance and the bid to create a broad device ecosystem, so Microsoft risks the same effect in the emerging market for tablet/notebook hybrids.

That form factor, with its assorted variations from Intel Ultrabooks to Surface Pro tablets, will be vital to propel Windows 10 growth, but despite the latter-day success of the Surface family, Microsoft cannot dominate the post-PC territory all by itself. To fend off MacBooks, iPads, Chromebooks and Android devices, it needs to have a broad base of OEMs making innovative Windows 10 products. If it confines its Surface launches to a leadership role – demonstrating to OEMs, developers and users what can be done with W10, as Google does for Android with Nexus – that should be possible. But if it competes with its own partners, it risks driving them towards Linux.The Surface Book sports a 13.5-inch touchscreen which detaches to work as a standalone tablet. It claims up to 12 hours of battery life and comes in flexible configurations, with choices of memory (up to 16GB of RAM), hard drive size (up to a terabyte) and processor speed. The device runs on sixth-generation Intel Core i5 and i7 processors with Intel HD graphics, and there is an optional Nvidia GeForce GPU. All that comes at a price – $1,499 for the entry level model, up to $2,699 for the top end.

Napsat komentář