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A Raspberry Pi (or short: Rpi) is a cheap credit-card sized computer, equipped with an ARM processor powerful enough to run most linux distributions.

The foundation

main article: Rpi Foundation

The Raspberry Pi is a project by the Raspberry Pi foundation which aims to bring computer interaction back to schoolkids, by producing very small, cheap computers.

System Specifications

The Rasberry Pi comes in two tastes, A and B, with B having more features. The General Purpose Input/Output (GPIO) pins on each board allow for the use of optional Rpi expansion boards

Model A Model B
Target price: US$25 (GBP £16) US$35 (GBP £22)
System-on-a-chip (SoC): Broadcom BCM2835 (CPU + GPU + DSP + SDRAM)
CPU: 700 MHz ARM11
GPU: Broadcom VideoCore OpenGL ES 2.0, 1080p30 H.264 high-profile decode
Memory (SDRAM): 128 MiB 256 MiB
USB 2.0 ports: 1 2 (via integrated USB hub)
Video outputs: Composite video|Composite RCA, HDMI (not at the same time)
Audio outputs: TRS connector|3.5 mm jack, HDMI
Audio inputs: none, but a USB mic or sound-card could be added
Onboard Storage: Secure Digital|SD / MMC / SDIO card slot
Onboard Network: None 10/100 wired Ethernet RJ45
Low-level peripherals: General Purpose Input/Output (GPIO) pins, Serial Peripheral Interface Bus (SPI), I²C, I²S, Universal asynchronous receiver/transmitter (UART)
Real-time clock: None
Power source: 5V via Micro USB or GPIO header
Power ratings: 500mA, (2.5 Watt) 700mA, (3.5 Watt)
Size: 85.60mm x 53.98mm (3.370 × 2.125 inch)


main article: Rpi Software

The Raspberry Pi is a fully capable ARM computer, so it should be able to run about everything compiled in ARM.