This product is variations of Raspberry Pi.
Raspberry Pi is a portable, powerful mini computer. The board length is only 85mm and width is only 56mm.Its compatible with UniPi Board. It is only as big as a credit card but it is a capable little PC. It can be used for many things that your desktop PC does, like high-definition video, home automation, railways or remote control. Raspberry Pi also has wide application range, such as music machines, parent detectors to weather stations, tweeting birdhouses with infra-red cameras, lightweight web server, home automation server, etc. It enables people of all ages to explore computing, learn to program and understand how computers work.
The Raspberry Pi 2 Model B is the second generation Raspberry Pi. It replaced the Raspberry Pi 1 Model B+ in February 2015.
Because it has an ARMv7 processor, it can run the full range of ARM GNU/Linux distributions, including Snappy Ubuntu Core, as well as Microsoft Windows 10 (see the blog for more information).
The Raspberry Pi 2 has an identical form factor to the previous (Pi 1) Model B+ and has complete compatibility with Raspberry Pi 1.
We recommend the Raspberry Pi 2 Model B for use in schools: it offers more flexibility for learners then RPi 1 Model B+ or RPi 1 Model A+, which is more useful for embedded projects and projects which require very low power.
Compared to the Raspberry Pi 1 model B+ it has:
A 900MHz quad-core ARM Cortex-A7 CPU instead of Broadcom BCM2835 SoC processor with 700MHz ARM1176JZF-S core
1GB RAM instead of 512MB RAM
Like the (Pi 1) Model B+, it also has:
4 USB ports
40 GPIO pins
Full HDMI port
Combined 3.5mm audio jack and composite video
Camera interface (CSI)
Display interface (DSI)
Micro SD card slot
VideoCore IV 3D graphics core
We found that we could run most USB peripherals. We tried to overload it with a mouse, keyboard, USB webcam and memory stick and it still worked. We even had some success with a keyboard, mouse, webcam and microphone, though we wouldn’t recommend that setup for any serious recording. For normal use of the Pi (such as with mouse, keyboard and USB memory stick), the ports should work without any problems.
After the additional USB ports, the most noticeable thing on the Raspberry Pi 1 model B+ and Raspberry Pi 2 model B compared to first Raspberry Pi 1 model B is the additional GPIO headers. There are now 40 rather than 26 (there are actually 34 on the B, but the 8 on pad 5 don’t have headers). These provide 19 GPIOs (including pad 5) on the B and 26 on the Raspberry Pi model B+. In technical terms, the whole of Bank 0 from the SoC is now exposed (and the other banks are put to work elsewhere). The first 20 of the 40 headers on the Raspberry Pi 1 model B+ and RPi 2 model B are the same as the RPi 1 B, so some existing expansion boards should work without problems. However, because the board layout has changed, larger expansion boards that fit around the components may not fit on anymore. For example, the PiFace doesn’t. This is something that schools and workshops that already have a significant number of expansion boards may wish to consider. Since the headers just need raising to lift the expansion board above the level of the components on the board, it’s quite likely that someone will start selling adaptors for this. The additional 7 GPIOs probably won’t have much effect on most projects since expansion boards tend to use one of the GPIO communications protocol (i2C or SPI) and these only use a few pins. If you need more GPIOs, it’s fairly trivial to use one of these protocols to drive more, and this will provide some protection for the pins on the Raspberry Pi as well. There are also no more feature pins in the GPIO, so don’t expect any more PWMs or UARTs. One area where the extra pins could come in useful is in implementing communication protocols that need more channels. For example, the model B doesn’t have enough pins to run either DPI or SLI (protocols to communicate with displays), but the Raspberry Pi model B+ does. This won’t actually be supported by the Raspberry Pi Foundation, but will, in theory, be possible if should someone implement it. Hopefully we’ll see some interesting expansion boards that take advantage of the new possibilities soon.