Raspberry Pie Development Series Tutorials 1--Raspberry Pie Introduction __ Boutique articles Reproduced

1, what is the raspberry pie.
Raspberry Pi (Chinese named "Raspberry Pie", abbreviated as RPi, or RASPI/RPI) is designed for students ' computer programming education, and only card-type computers with credit cards size are based on Linux.

The raspberry pie was developed by the Raspberry Pi Foundation, a charitable organization registered in the UK, Eben upton/Es Upton is the project leader. March 2012, the University of Cambridge Eben Apton (Eben Epton) officially sold the world's smallest desktop, also known as card-type computer, only the size of the credit card, but has all the basic computer functions, this is the Raspberry Pi Computer board, the Chinese translation of "Raspberry pie." The foundation aims to improve the education of computer science and related disciplines, and to make computers more interesting. The Foundation expects that this computer will be developed and applied to more areas in both developing and developed countries.

Bottom line : The raspberry pie is a card size development board that can run Linux and we can use it to develop the devices I want.

2, the type of raspberry pie

Type A: 1 USB, no wired network interface, Power 2.5w,500ma, 256MB RAM (basically not seen)

Type B: 2 USB, support wired network, Power 3.5w,700ma, 512MB RAM, 26 gpio (there are a lot of market).

B + Type: 4 USB ports, support wired network, power consumption 1w,512m RAM 40 Gpio (2014 new, recommended)

Purchase please search on Taobao, very much: 200 to-300 yuan (bare board, excluding SD card, power)

3, Raspberry pie parameters:

Type B:

Processor	BroadcomBCM2835 (CPU,GPU,DSP and SDRAM,USB)
Cpu	Arm1176jzf-s Core (ARM11 series) 700MHz
Gpu	Broadcom videocrore iv,opengl ES 2.0,1080p h.264/mpeg-4 AVC HD Decoder
Memory	512MByte
USB 2.0	2 (Support USB hub expansion)
Image output	Composite RCA (PAL & NTSC), HDMI (Rev 1.3 & 1.4), Raw LCD Panels via DSI resolution from 640x350 to 1920x1200 Plus various PAL ANDNTSC standards
Audio source Output	3.5mm Jack, HDMI
Onboard storage	Sd/mmc/sdio card Slots
Network interface	10/100 Ethernet Interface
Peripherals	8xGPIO, UART, I2C, with two selected SPI bus, +3.3v,+5v,ground (negative)
Rated Power	700mA (3.5W)
Power input	5V/through microUSB or Gpio head
Overall Size	85.60 x 53.98 mm (3.370 x 2.125 in)
Operating system	Debian Gnu/linux,fedora,arch linux Arm,risc OS, XBMC

B + Improvement

• More gpio:b+ will increase the general input output pins to 40, while model B is only 26;
• More usb:b+ offers 4 USB ports for better compatibility with hot plug (Model B only has 2);
• Support microSD: Old SD card slot, has been replaced by a more beautiful push-type microSD card slot;
• Lower power consumption: the linear regulator replaced the switch, power consumption reduced by 0.5W to 1W;
• Better audio: The audio circuit part uses the special low noise power supply;
• Compact appearance: USB interface is pushed to one side of the motherboard, the composite video is moved to the location of the 3.5mm audio port, and 4 separate mounting holes are added.

4, Raspberry pie distribution map

B type, plus a similar, please compare your own reference