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Raspberry Pi

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Raspberry Pi
Alpha development board at TransferSummit 2011
DeveloperRaspberry Pi Foundation
TypeSystem-on-a-chip
Release dateLate 2011[1]
Introductory priceUS$25 or $35
Operating systemLinux (Debian, Fedora and ArchLinux)[2], RISC OS[3]
CPUARM1176JZF-S 700 MHz
Memory128 or 256 MB
Websitewww.raspberrypi.org

The Raspberry Pi is a single-board computer developed by the Raspberry Pi Foundation. Scheduled for public release in December 2011,[1] the foundation plans to release two versions that range from US$25 to $35 (GBP £16 to £22). It is intended to stimulate the teaching of basic computer science in schools.[4][1][5][6][7]

The design includes an ARM1176JZF-S 700-megahertz (MHz) processor, 128-256 megabytes (MB) of memory, intended to run Linux or RISC OS.[2][3] The design does not include a built-in hard disk or solid-state drive, instead relying on an SD card for long-term storage.

Development

Development of the device is undertaken by the Raspberry Pi Foundation, a charitable organization registered with the Charity Commission. The foundation was founded on 5 May 2009 in Caldecote, South Cambridgeshire, UK.[8] Its aim is to "promote the study of computer science and related topics, especially at school level, and to put the fun back into learning computing."[9] The named trustees are David Braben, Jack Lang, Pete Lomas, Robert Mullins, Alan Mycroft and Eben Upton.[10] A podcast of an interview with Eben Upton was made available in June 2011.[11] An early prototype version of the computer was mounted in a package the same size as a USB memory stick, and had a USB port on one end with an HDMI port on the other; shipping versions are planned to be credit card sized.

A prototype board made in 2006 used the Atmel ATmega644 microcontroller.[12] The Foundation has made these board schematics available.[12]

Fifty Alpha boards were delivered in August 2011. These boards are functionally identical to the planned model B[13], only larger to accommodate debug headers. Demos of the board have shown it running the LXDE desktop on Debian, Quake 3 at 1080p[14], and Full HD H.264 video over HDMI.[15]

Raspberry Pi community forum administrators have mentioned that XBMC developers are also in development of a port of XBMC media center software to Broadcom BCM2835 SoC based devices using the Raspberry Pi board as its reference platform.[16][17][4]

The logo was selected from a number submitted by members of the community. A shortlist of 6 was drawn up, with the final judging taking several days. The chosen design was created by Paul Beech, and is based on a buckyball.[18]

The board runs the Linux kernel. A development version of RISC OS 5 is being worked on[19] and was seen publicly in October 2011.[3]

Features

The low-end model has 128 MB memory, one USB port and no Ethernet controller, and costs US$25, while the US$35 model contains 256 MB memory, two USB ports and a 10/100 Ethernet controller. The Raspberry Pi will use the Linux operating system. Debian GNU/Linux, Iceweasel, KOffice and Python are bundled with the Raspberry Pi.[1]

Specifications

Model A Model B
Target price:[1] US$25 (GBP £16) US$35 (GBP £22)
SoC:[1] BCM2835
CPU: 700 MHz ARM11
GPU: Broadcom VideoCore IV,[20] OpenGL ES 2.0, 1080p30 H.264 high-profile decode
Memory (SDRAM): 128 MB 256 MB
USB 2.0 ports: 1 2 (via integrated hub)
Video outputs:[1] Composite, HDMI
Audio outputs:[1] 3.5 mm jack, HDMI
On-board storage: SD/MMC/SDIO memory card slot
On-board network:[1] None 10/100 wired Ethernet
Low-level peripherals: Up to 16 GPIO pins, SPI, I²C, UART[20]
Real-time clock:[1] None
Power ratings: 500mA, (2.5 Watt) [1] 700mA, (3.5 Watt)
Power source:[1] 5V micro USB
Size: 85.60mm x 53.98mm[21] (3.370 × 2.125 in) (33/8 × 21/8 in)
Supported software: Debian GNU/Linux, Fedora, Arch Linux[2]
Unsupported software: Other FLOSS software (Iceweasel, KOffice, Python), RISC OS[3] (shared source)

See also

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References

  1. ^ a b c d e f g h i j k l Raspberry Pi FAQ. Raspberry Pi Foundation FAQ. Retrieved 2011-10-21. Cite error: The named reference "faq" was defined multiple times with different content (see the help page).
  2. ^ a b c "FAQs". Raspberry Pi. Retrieved November 03, 2011. What Linux distros will be supported at launch? Debian, Fedora and ArchLinux will be supported from the start. {{cite web}}: Check date values in: |accessdate= (help)
  3. ^ a b c d Holwerda, Thom (October 31, 2011). "Raspberry Pi To Embrace RISC OS". OSNews. Retrieved November 01, 2011. At the RISC OS London show, Theo Markettos, postdoctoral researcher in the University of Cambridge Computer Laboratory talked about RISC OS on the Pi. "Adrian Lees has RISC OS booting on the Raspberry Pi into the full RISC OS desktop. Lack of USB drivers then prevents user interaction," RISCOScode transcribed Markettos' words, "Work in progress on cannibalising Linux USB drivers to get RISC OS running fully on the Raspberry Pi." {{cite web}}: Check date values in: |accessdate= (help)
  4. ^ a b Raspberry Pi: Cheat Sheet
  5. ^ Cellan-Jones, Rory (2011-05-05). "A £15 computer to inspire young programmers". BBC News. blog with video {{cite web}}: Cite has empty unknown parameter: |coauthors= (help)
  6. ^ Price, Peter (2011-06-03). "Can a £15 computer solve the programming gap?". BBC Click. Retrieved 2011-07-02. video report {{cite web}}: Cite has empty unknown parameter: |coauthors= (help)
  7. ^ Bush, Steve (2011-05-25). "Dongle computer lets kids discover programming on a TV". Electronics Weekly. Retrieved 2011-07-11. Announced by UK games developer David Braben, the device can run Linux and is intended to be a low-cost (£15) way to introduce children to computer science.
  8. ^ "1129409 - Raspberry Pi Foundation". Charity Commission for England and Wales. 2011-06-06. The object of the charity is to further the advancement of education of adults and children, particularly in the field of computers, computer science and related subjects.
  9. ^ "Raspberry Pi Foundation". Raspberry Pi Foundation. Retrieved 2011-07-02.
  10. ^ Bush, Steve (2011-05-26). "In depth: Raspberry Pi, the computer on a stick". Electronics Weekly. Retrieved 2011-07-11. The Raspberry Pi developers and trustees of its Foundation are: David Braben - Founder of games software firm Frontier Developments and co-author of 'Elite'. Jack Lang - Business angel, early Acorn employee, founder of Cambridge start-ups. Pete Lomas - Founder and MD of Norcott Technologies. Robert Mullins - University of Cambridge Computer Laboratory and St. John's College, Cambridge. Alan Mycroft - Professor of Computing in University of Cambridge Computer Laboratory Eben Upton - Engineer at Broadcom Europe, founder of software start-ups, and former director of computer science at St. John's College, Cambridge.
  11. ^ "CFL Podcast: Eben Upton (Raspberry Pi Foundation)". Consortium of Foundation Libraries. Retrieved 2011-06-06.
  12. ^ a b Wong, George (October 24, 2011). "Build your own prototype Raspberry Pi minicomputer". ubergizmo. Retrieved November 02, 2011. From an Atmel ATmega644 microcontroller that ran at 22.1MHz with 512K of SRAM that's now been replaced by a 700MHz ARM11 processor and 128/256MB of SDRAM [...] they've also decided to share the schematics and PCB layout of the 2006 Raspberry Pi computer. {{cite web}}: Check date values in: |accessdate= (help)
  13. ^ Humphries, Matthew (2011-07-28). "Raspberry Pi $25 PC goes into alpha production". Geek.com. Retrieved 2011-08-01.
  14. ^ "Raspberry Pi Youtube Channel". Retrieved 2011-08-28.
  15. ^ "Full HD video demo at TransferSummit Oxford". Retrieved 2011-09-12.
  16. ^ XBMC Live USB Persistent (Raspberry Pi Forum)
  17. ^ This is probobly going to be the best HTPC when its released! (XBMC Forum)
  18. ^ Humphries, Matthew. "Raspberry Pi selects a very clever logo". geek.com. Retrieved October 11, 2011. [...] Raspberry Pi needed a logo, and decided to turn to the community to come up with ideas. [...] 6 designs made the shortlist, and it took several days for the judges to finally decide on the winner. [...] It was created by Paul Beech [...] the raspberry is a 3D buckyball [...]
  19. ^ Lee, Jeffrey. "Newsround". The Icon Bar. Retrieved October 17, 2011. Veteran developer Adrian Lees has expressed an interest in porting RISC OS to the low-cost Raspberry Pi computer. Previously the possibility of a port was put into doubt by the question of whether anyone would have access to the required hardware documentation, but since Adrian works at Broadcom alongside Raspberry Pi Foundation members it sounds like lack of documentation will be the least of his issues.
  20. ^ a b "Q&A with our hardware team". Raspberry Pi Foundation. Retrieved 2011-09-20.
  21. ^ Final PCB artwork
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