45-552: [REDACTED] Look up RPI in Wiktionary, the free dictionary. RPI may refer to: Universities [ edit ] Rensselaer Polytechnic Institute , Troy, New York, US Richmond Professional Institute , merged into Virginia Commonwealth University Science and technology [ edit ] Raspberry Pi (RPi), single-board computers and microcontrollers by public traded Raspberry Pi Ltd. Reticulocyte production index ,
90-496: A RISC -based 700 MHz 32-bit ARM11 76JZF-S processor, VideoCore IV graphics processing unit (GPU), and RAM. It has a level 1 (L1) cache of 16 KB and a level 2 (L2) cache of 128 KB. The level 2 cache is used primarily by the GPU. The SoC is stacked underneath the RAM chip, so only its edge is visible. The ARM1176JZ(F)-S is the same CPU used in the original iPhone , although at
135-409: A RP2040 system on chip with an integrated ARM -compatible central processing unit (CPU). The Raspberry Pi hardware has evolved through several versions that feature variations in the type of the central processing unit, amount of memory capacity, networking support, and peripheral-device support. This block diagram describes models B, B+, A and A+. The Pi Zero models are similar, but lack
180-745: A public company in June 2024, launching on the London Stock Exchange where it trades with the stock symbol RPI. Most Raspberry Pis are made in a Sony factory in Pencoed , Wales, while others are made in China and Japan. There are three series of Raspberry Pi, and several generations of each have been released. Raspberry Pi SBCs feature a Broadcom system on a chip (SoC) with an integrated ARM -compatible central processing unit (CPU) and on-chip graphics processing unit (GPU), while Raspberry Pi Pico has
225-563: A blood test result Ribose-5-phosphate isomerase (Rpi), an enzyme Organizations [ edit ] Recognition Professionals International Republican Party of India Republican Party of Iowa Other [ edit ] Rating percentage index , in college sports Retail price index , UK inflation measure Revenue Protection Inspector , on UK public transport Rock progressivo italiano , Italian progressive rock See also [ edit ] RP 1 (disambiguation) RPL (disambiguation) Topics referred to by
270-563: A blood test result Ribose-5-phosphate isomerase (Rpi), an enzyme Organizations [ edit ] Recognition Professionals International Republican Party of India Republican Party of Iowa Other [ edit ] Rating percentage index , in college sports Retail price index , UK inflation measure Revenue Protection Inspector , on UK public transport Rock progressivo italiano , Italian progressive rock See also [ edit ] RP 1 (disambiguation) RPL (disambiguation) Topics referred to by
315-506: A custom interrupt controller poorly suited for virtualisation, the interrupt controller on this SoC is compatible with the ARM Generic Interrupt Controller (GIC) architecture 2.0, providing hardware support for interrupt distribution when using ARM virtualisation capabilities. The VideoCore IV of the previous models has also been replaced with a VideoCore VI running at 500 MHz. The Raspberry Pi Zero and Zero W use
360-506: A higher clock rate , and mated with a much faster GPU. The earlier V1.1 model of the Raspberry Pi 2 used a Broadcom BCM2836 SoC with a 900 MHz 32-bit , quad-core ARM Cortex-A7 processor, with 256 KB shared L2 cache. The Raspberry Pi 2 V1.2 was upgraded to a Broadcom BCM2837 SoC with a 1.2 GHz 64-bit quad-core ARM Cortex-A53 processor, the same one which is used on the Raspberry Pi 3, but underclocked (by default) to
405-731: A newer chipset can boot from USB mass storage, such as from a flash drive. Booting from USB mass storage is not available in the original Raspberry Pi models, the Raspberry Pi Zero, the Raspberry Pi Pico, the Raspberry Pi 2 A models, and the Raspberry Pi 2 B models with versions lower than 1.2. Although often pre-configured to operate as a headless computer , the Raspberry Pi may also optionally be operated with any generic USB computer keyboard and mouse . It may also be used with USB storage, USB to MIDI converters, and virtually any other device/component with USB capabilities, depending on
450-481: A quad-core ARM Cortex-A76 processor clocked at 2.4 GHz, alongside a VideoCore VII GPU clocked at 800 MHz. The BCM2712 SoC also features support for cryptographic extensions for the first time on a Raspberry Pi model. Alongside the new processor and graphics unit, the monolithic design of the earlier BCM2711 has been replaced with a CPU and chipset (southbridge) architecture , as the IO functionality has been moved to
495-448: A quad-core Cortex-A53 processor, is described as having ten times the performance of a Raspberry Pi 1. Benchmarks showed the Raspberry Pi 3 to be approximately 80% faster than the Raspberry Pi 2 in parallelised tasks. The Raspberry Pi 4, with a quad-core Cortex-A72 processor, is described as having three times the performance of a Raspberry Pi 3. Most Raspberry Pi systems-on-chip can be overclocked to various degrees utilising
SECTION 10
#1732852500766540-449: A standard 3.5 mm tip-ring-sleeve jack carrying mono audio together with composite video. Lower-level output is provided by a number of GPIO pins, which support common protocols like I²C . The B-models have an 8P8C Ethernet port and the Pi 3, Pi 4 and Pi Zero W have on-board Wi-Fi 802.11n and Bluetooth . The Broadcom BCM2835 SoC used in the first generation Raspberry Pi includes
585-504: A wholly-owned subsidiary of the Foundation. The Raspberry Pi project originally leaned toward the promotion of teaching basic computer science in schools. The original model became more popular than anticipated, selling outside its target market for diverse uses such as robotics , home automation , industrial automation , and by computer and electronic hobbyists, because of its low cost, modularity, open design , and its adoption of
630-510: Is monotonic (files saved later in time always have later timestamps) but may be considerably earlier than the actual time. For systems that require a built-in real-time clock, a number of small, low-cost add-on boards with real-time clocks are available. The Raspberry Pi 5 is the first to include a real-time clock. If an external battery is not plugged in, the Pi 5 will use the Network Time Protocol , or will need to be set manually, as
675-547: Is also connected directly to the SoC, but it uses a micro USB (OTG) port. Unlike all other Pi models, the 40 pin GPIO connector is omitted on the Pi Zero, with solderable through-holes only in the pin locations. The Pi Zero WH remedies this. Processor speed ranges from 700 MHz to 2.4 GHz for the Pi 5; on-board memory ranges from 256 MB to 8 GB random-access memory (RAM), with only
720-676: Is available with 2, 4 or 8 GB of RAM. The Model A, A+ and Pi Zero have no Ethernet circuitry and are commonly connected to a network using an external user-supplied USB Ethernet or Wi-Fi adapter. On the Model B and B+ the Ethernet port is provided by a built-in USB Ethernet adapter using the SMSC LAN9514 chip. The Raspberry Pi 3 and Pi Zero W (wireless) are equipped with 2.4 GHz WiFi 802.11n (150 Mbit/s) and Bluetooth 4.1 (24 Mbit/s) based on
765-613: Is different from Wikidata All article disambiguation pages All disambiguation pages RPI [REDACTED] Look up RPI in Wiktionary, the free dictionary. RPI may refer to: Universities [ edit ] Rensselaer Polytechnic Institute , Troy, New York, US Richmond Professional Institute , merged into Virginia Commonwealth University Science and technology [ edit ] Raspberry Pi (RPi), single-board computers and microcontrollers by public traded Raspberry Pi Ltd. Reticulocyte production index ,
810-571: Is different from Wikidata All article disambiguation pages All disambiguation pages Raspberry Pi Raspberry Pi ( / p aɪ / ) is a series of small single-board computers (SBCs) developed in the United Kingdom . The original Raspberry Pi computer was developed by the Raspberry Pi Foundation in association with Broadcom . Since 2012, all Raspberry Pi products have been developed by Raspberry Pi Ltd, which began as
855-536: Is not limited as it is not funnelled via the USB chip.) The RPi Zero, RPi1A, RPi3A+ and RPi4 can be used as a USB device or "USB gadget", plugged into another computer via a USB port on another machine. It can be configured in multiple ways, such as functioning as a serial or Ethernet device. Although originally requiring software patches, this was added into the mainline Raspbian distribution in May 2016. Raspberry Pi models with
900-514: The Ethernet and USB hub components. The Ethernet adapter is internally connected to an additional USB port. In Model A, A+, and the Pi Zero, the USB port is connected directly to the system on a chip (SoC). On the Pi 1 Model B+ and later models the USB/Ethernet chip contains a five-port USB hub, of which four ports are available, while the Pi 1 Model B only provides two. On the Pi Zero, the USB port
945-633: The HDMI and USB standards. The Raspberry Pi became the best-selling British computer in 2015, when it surpassed the ZX Spectrum in unit sales. The Raspberry Pi Foundation was created as a private company limited by guarantee in 2008, and was registered as a charity in 2009 by people at the University of Cambridge Computer Laboratory who had noticed a decline in the number and skills of young people applying for computer science courses. In 2012, after
SECTION 20
#1732852500766990-520: The Nokia 701 uses 128 MB for the Broadcom VideoCore IV. The later Model B with 512 MB RAM, was released on 15 October 2012 and was initially released with new standard memory split files (arm256_start.elf, arm384_start.elf, arm496_start.elf) with 256 MB, 384 MB, and 496 MB CPU RAM, and with 256 MB, 128 MB, and 16 MB video RAM, respectively. But about one week later,
1035-541: The B and B+ models, and 512 MB of RAM in the A+ model. The Raspberry Pi Zero and Zero W have 512 MB of RAM. The Raspberry Pi 4 is available with 1, 2, 4 or 8 GB of RAM. A 1 GB model was originally available at launch in June 2019 but was discontinued in March 2020, and the 8 GB model was introduced in May 2020. The 1 GB model returned in October 2021. The Raspberry Pi 5
1080-580: The BCM2710A1 in its Broadcom BCM2837 SoC, but clocked at a higher 1.2 GHz. The Raspberry Pi Pico uses the RP2040 , a microcontroller containing dual ARM Cortex-M0+ cores running at 133 MHz, 6 banks of SRAM totalling 264 KB, and programmable IO for peripherals. The Raspberry Pi 5 uses the Broadcom BCM2712 SoC, which is a chip designed in collaboration with Raspberry Pi. The SoC features
1125-613: The Broadcom BCM43438 FullMAC chip with no official support for monitor mode (though it was implemented through unofficial firmware patching ) and the Pi 3 also has a 10/100 Mbit/s Ethernet port. The Raspberry Pi 3B+ features dual-band IEEE 802.11b/g/n/ac WiFi , Bluetooth 4.2 , and Gigabit Ethernet (limited to approximately 300 Mbit/s by the USB 2.0 bus between it and the SoC). The Raspberry Pi 4 has full gigabit Ethernet (throughput
1170-493: The CPU. On the early 256 MB releases of models A and B, three different splits were possible. The default split was 192 MB for the CPU, which should be sufficient for standalone 1080p video decoding, or for simple 3D processing. 224 MB was for Linux processing only, with only a 1080p framebuffer , and was likely to fail for any video or 3D. 128 MB was for heavy 3D processing, possibly also with video decoding. In comparison,
1215-521: The Raspberry Pi 4 and the Raspberry Pi 5 having more than 1 GB. Secure Digital (SD) cards in MicroSDHC form factor (SDHC on early models) are used to store the operating system and program memory, however some models also come with onboard eMMC storage and the Raspberry Pi 4 can also make use of USB-attached SSD storage for its operating system. The boards have one to five USB ports. For video output, HDMI and composite video are supported, with
1260-435: The Raspberry Pi 5's custom RP1 chip. While operating at 700 MHz by default, the first generation Raspberry Pi provided a real-world performance roughly equivalent to 0.041 GFLOPS . On the CPU level the performance is similar to a 300 MHz Pentium II of 1997–99. The GPU provides 1 Gpixel /s or 1.5 Gtexel /s of graphics processing or 24 GFLOPS of general purpose computing performance. The graphical capabilities of
1305-478: The Raspberry Pi are roughly equivalent to the performance of the Xbox of 2001. Raspberry Pi 2 V1.1 included a quad-core Cortex-A7 CPU running at 900 MHz and 1 GB RAM. It was described as 4–6 times more powerful than its predecessor. The GPU was identical to the original. In parallelised benchmarks, the Raspberry Pi 2 V1.1 could be up to 14 times faster than a Raspberry Pi 1 Model B+. The Raspberry Pi 3, with
1350-457: The board version and on which of the turbo settings is used. The overclocking modes are: In the highest ( turbo ) mode the SDRAM clock speed was originally 500 MHz, but this was later changed to 600 MHz because of occasional SD card corruption. Simultaneously, in high mode the core clock speed was lowered from 450 to 250 MHz, and in medium mode from 333 to 250 MHz. The CPU of
1395-523: The built in config.txt file in the boot sector of the Raspberry Pi OS. Overclocking is generally safe and does not automatically void the warranty of the Raspberry Pi; however, setting the "force_turbo" option to 1 bypasses voltage and temperature limits and voids the users warranty. In Raspberry Pi OS the overclocking options on boot can also be made by a software command running "sudo raspi-config" on Raspberry Pi 1, 2, and original 3B without voiding
RPI - Misplaced Pages Continue
1440-579: The decoding of H.265-encoded videos in software. The GPU in the Raspberry Pi 3 runs at higher clock frequencies of 300 MHz or 400 MHz, compared to previous versions which ran at 250 MHz. The Raspberry Pis can also generate 576i and 480i composite video signals, as used on old-style (CRT) TV screens and less-expensive monitors through standard connectors – either RCA or 3.5 mm phono connector depending on model. The television signal standards supported are PAL-B/G/H/I/D , PAL-M , PAL-N , NTSC and NTSC-J . When booting,
1485-478: The first and second generation Raspberry Pi board did not require cooling with a heat sink or fan , even when overclocked, but the Raspberry Pi 3 may generate more heat when overclocked. The early designs of the Raspberry Pi Model A and B boards included 256 MB of random-access memory (RAM). Of this, the early beta Model B boards allocated 128 MB to the GPU by default, leaving only 128 MB for
1530-444: The following resolutions: 640×350 EGA ; 640×480 VGA ; 800×600 SVGA ; 1024×768 XGA ; 1280×720 720p HDTV ; 1280×768 WXGA variant; 1280×800 WXGA variant; 1280×1024 SXGA ; 1366×768 WXGA variant; 1400×1050 SXGA+ ; 1600×1200 UXGA ; 1680×1050 WXGA+ ; 1920×1080 1080p HDTV ; 1920×1200 WUXGA . Higher resolutions, up to 2048×1152, may work or even 3840×2160 at 15 Hz (too low a frame rate for convincing video). Allowing
1575-433: The foundation released a new version of start.elf that could read a new entry in config.txt (gpu_mem= xx ) and could dynamically assign an amount of RAM (from 16 to 256 MB in 8 MB steps) to the GPU, obsoleting the older method of splitting memory, and a single start.elf worked the same for 256 MB and 512 MB Raspberry Pis. The Raspberry Pi 2 has 1 GB of RAM. The Raspberry Pi 3 has 1 GB of RAM in
1620-498: The highest resolutions does not imply that the GPU can decode video formats at these resolutions; in fact, the Raspberry Pis are known to not work reliably for H.265 (at those high resolutions), commonly used for very high resolutions (however, most common formats up to Full HD do work). Although the Raspberry Pi 3 does not have H.265 decoding hardware, the CPU is more powerful than its predecessors, potentially fast enough to allow
1665-473: The installed device drivers in the underlying operating system (many of which are included by default). Other peripherals can be attached through the various pins and connectors on the surface of the Raspberry Pi. The video controller can generate standard modern TV resolutions, such as HD and Full HD , and higher or lower monitor resolutions as well as older NTSC or PAL standard CRT TV resolutions. As shipped (i.e., without custom overclocking) it can support
1710-475: The lifetime of the board. This is done by monitoring the core temperature of the chip and the CPU load , and dynamically adjusting clock speeds and the core voltage . When the demand is low on the CPU or it is running too hot, the performance is throttled , but if the CPU has much to do and the chip's temperature is acceptable, performance is temporarily increased with CPU clock speeds of up to 1.1 GHz, depending on
1755-587: The release of the second board type, the Raspberry Pi Foundation set up a new entity responsible for developing their computers, named Raspberry Pi (Trading) Ltd, and installed Eben Upton (one of the 2008 group) as CEO . The Foundation was rededicated as an educational charity for promoting the teaching of basic computer science in schools and developing countries. In 2021, Raspberry Pi (Trading) Ltd changed its name to Raspberry Pi Ltd. Its newly-formed parent company, Raspberry Pi Holdings Ltd, became
1800-569: The same 900 MHz CPU clock speed as the V1.1. The BCM2836 SoC is no longer in production as of late 2016. The Raspberry Pi 3 Model B uses a Broadcom BCM2837 SoC with a 1.2 GHz 64-bit quad-core ARM Cortex-A53 processor, with 512 KB shared L2 cache. The Model A+ and B+ are 1.4 GHz The Raspberry Pi 4 uses a Broadcom BCM2711 SoC with a 1.5 GHz (later models: 1.8 GHz) 64-bit quad-core ARM Cortex-A72 processor, with 1 MB shared L2 cache. Unlike previous models, which all used
1845-471: The same Broadcom BCM2835 SoC as the first generation Raspberry Pi, although now running at 1 GHz CPU clock speed. The Raspberry Pi Zero 2 W uses the RP3A0-AU, which is a System-in-Package (SiP) design. The package contains a Broadcom BCM2710A1 processor, which is a 64-bit quad-core ARM Cortex-A53 clocked at 1 GHz, along with 512 MB of LPDDR2 SDRAM layered above. The Raspberry Pi 3 also uses
RPI - Misplaced Pages Continue
1890-403: The same term [REDACTED] This disambiguation page lists articles associated with the title RPI . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=RPI&oldid=1240096007 " Category : Disambiguation pages Hidden categories: Short description
1935-403: The same term [REDACTED] This disambiguation page lists articles associated with the title RPI . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=RPI&oldid=1240096007 " Category : Disambiguation pages Hidden categories: Short description
1980-400: The time defaults to being set over the network using the Network Time Protocol (NTP). The source of time information can be another computer on the local network that does have a real-time clock, or to a NTP server on the internet. If no network connection is available, the time may be set manually or configured to assume that no time passed during the shutdown. In the latter case, the time
2025-417: The warranty. In those cases the Pi automatically shuts the overclocking down if the chip temperature reaches 85 °C (185 °F); an appropriately sized heat sink is needed to protect the chip from thermal throttling . Newer versions of the firmware contain the option to choose between five overclock ("turbo") presets that, when used, attempt to maximise the performance of the SoC without impairing
#765234