‪#‎Raspberry_Pi‬ - Credit Card sized computer

#‎Raspberry_Pi‬ - Credit Card sized computer
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The Raspberry Pi is a credit-card-sized single-board computer developed in the UK by the Raspberry Pi Foundation with the intention of promoting the teaching of basic computer science in schools. ‪#‎UnhappyGhost‬

The Raspberry Pi is manufactured through licensed manufacturing deals with Element 14/Premier Farnell, RS Components and Egoman. All of these companies sell the Raspberry Pi online. ‪#‎GeekSchool‬ ‪#‎GeekSch00l‬

The Raspberry Pi has a Broadcom BCM2835 system on a chip (SoC), which includes an ARM1176JZF-S 700 MHz processor (The firmware includes a number of "Turbo" modes so that the user can attempt ‪#‎overclocking‬, up to 1 GHz, without affecting the warranty), ‪#‎VideoCore‬ IV GPU which is capable of ‪#‎BluRay‬ quality playback, using H.264 at 40MBits/s. It has a fast 3D core accessed using the supplied OpenGL ES2.0 and OpenVG libraries. It does not include a built-in hard disk or solid-state drive, but uses an SD card for booting and long-term storage. The Foundation's goal is to offer two versions: http :// www. facebook .com/geeksch00l

Model A - priced at US$25, has 256MB of RAM, one USB port and no Ethernet(LAN) ports
Model B - priced at US$35, has 512MB of RAM, 2 USB ports and 1 Ethernet(LAN) port

Though the Model A doesn't have an 8P8C (RJ45) Ethernet port, it can connect to a network by using a user-supplied USB Ethernet or Wi-Fi adapter. http :// www. facebook .com/geeksch00l There is in reality no difference between a model A with an external Ethernet adapter and a model B with one built in, because the Ethernet port of the model B is actually a built-in USB Ethernet adapter. As is typical of modern computers, generic USB keyboards and mice are compatible with the Raspberry Pi.

The Raspberry Pi does not come with a real-time clock, like the one on a normal PC with battery on the motherboard to keep the clock running, so an OS must use a network time server, or ask the user for time information at boot time to get access to time and date for file time and date stamping. http :// www. facebook .com/geeksch00l However, a real-time clock (such as the DS1307) with battery backup can be added via the I²C interface.

The Foundation provides ‪#‎Debian‬ and ‪#‎Arch‬ ‪#‎Linux‬ ‪#‎ARM‬ distributions for download. Also planned are tools for supporting ‪#‎Python‬ as the main ‪#‎programming‬ language, with support for ‪#‎BBC_BASIC‬, (via the ‪#‎RISC_OS‬ image or the "Brandy Basic" clone for Linux), ‪#‎C‬, and ‪#‎Perl‬. http :// www. facebook .com/geeksch00l

Tech specs of Model A
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> SoC - Broadcom BCM2835 (CPU, GPU, DSP, SDRAM, and single USB port)
> CPU - 700 MHz ARM1176JZF-S core (ARM11 family, ARMv6 instruction set)
> GPU - Broadcom VideoCore IV @ 250 MHz, OpenGL ES 2.0 (24 GFLOPS)
MPEG-2 and VC-1 (with license), 1080p30 h.264/MPEG-4 AVC high-profile decoder and encoder
> Memory - SDRAM, 256MB (shared with GPU)
> USB - 2.0ports, 1 (direct from BCM2835 chip)
> Video input - Composite RCA (PAL and NTSC), HDMI (rev 1.3 & 1.4), raw LCD Panels via DSI, 14 HDMI resolutions from 640×350 to 1920×1200 plus various PAL and NTSC standards.
http :// www. facebook .com/geeksch00l
> Audio input - 3.5 mm jack, HDMI, and, as of revision 2 boards, I²S audio (also potentially for audio input)
> Onboard Storage - SD / MMC / SDIO card slot (3,3V card power support only)
> Onboard network - none
> Power ratings - 300mA (1.5W)
> Power source - 5 volt via MicrosUSB or GPIO header
> Size - 85.60 mm × 53.98 mm (3.370 in × 2.125 in)
> Weight - 45g (1.6oz)
> Supported OS - Arch Linux ARM, Debian GNU/Linux, Fedora, FreeBSD, NetBSD, Plan 9, Raspbian OS, RISC OS, Slackware Linux
> Priced : US$ 25

Tech specs of Model B
----------------------------
> SoC - Broadcom BCM2835 (CPU, GPU, DSP, SDRAM, and single USB port)
> CPU - 700 MHz ARM1176JZF-S core (ARM11 family, ARMv6 instruction set)
> GPU - Broadcom VideoCore IV @ 250 MHz, OpenGL ES 2.0 (24 GFLOPS)
MPEG-2 and VC-1 (with license), 1080p30 h.264/MPEG-4 AVC high-profile decoder and encoder
> Memory - SDRAM, 512MB (shared with GPU)
> USB - 2.0ports, 2 (via the built in integrated 3-port USB hub)
> Video input - Composite RCA (PAL and NTSC), HDMI (rev 1.3 & 1.4), raw LCD Panels via DSI, 14 HDMI resolutions from 640×350 to 1920×1200 plus various PAL and NTSC standards.
> Audio input - 3.5 mm jack, HDMI, and, as of revision 2 boards, I²S audio (also potentially for audio input)
> Onboard Storage - SD / MMC / SDIO card slot (3,3V card power support only)
http :// www. facebook .com/geeksch00l
> Onboard network - 10/100 Ethernet (8P8C) USB adapter on the third port of the USB hub
> Power ratings - 700mA (3.5W)
> Power source - 5 volt via MicrosUSB or GPIO header
> Size - 85.60 mm × 53.98 mm (3.370 in × 2.125 in)
> Weight - 45g (1.6oz)
> Supported OS - Arch Linux ARM, Debian GNU/Linux, Fedora, FreeBSD, NetBSD, Plan 9, Raspbian OS, RISC OS, Slackware Linux
> Priced : US$ 35

source : Wikipedia and raspberrypi(dot)org

for more posts visit : http :// goo .gl/O0omO
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