Since its introduction, the Raspberry Pi has been sought after by many computer enthusiasts and creators, and was once hard to find. Don't look at its appearance "small", but the inner "heart" is very powerful, video, audio and other functions are all there, so it can be said that "the sparrow may be small, but all the organs are complete".
December 16, 2019, TIME magazine recently named the "10 most influential tech products of the decade," and the Raspberry Pi came in third.
On May 29, 2020, the Raspberry Pi Foundation announced the launch of a new SKU for the Raspberry Pi 4B, an 8GB RAM version.
Basic Information
Chinese Name
Raspberry Pi
Foreign Name
Raspberry Pi
Alias
RPi
Brand
Raspberry Pi Foundation
Type
A/A+/B /B+/2nd Generation B / 3rd Generation B
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Microcomputer
Raspberry Pi
Raspberry Pi
Raspberry Pi was developed by the Raspberry Pi Foundation, a UK-registered charitable organization, under the leadership of Eben-Upton
Raspberry Pi Foundation. In March 2012, Eben Epton of the University of Cambridge officially launched the world's smallest desktop computer, also known as a card computer, which is the size of a credit card but has all the basic functions of a computer: the Raspberry Pi computer board, which translates to "Raspberry Pi" in Chinese. The foundation's mission is to make computers fun by improving education in computer science and related subjects in schools. The foundation expects that more and more applications for this computer will be developed and utilized in both developing and developed countries. Early concepts of the Raspberry Pi in 2006 were based on Atmel's ATmega644 microcontroller, and the first 10,000 "units" of the Raspberry Pi were marketed as "boards" made by manufacturers in Taiwan and mainland China.
It is an ARM-based micro-computer motherboard, SD/MicroSD card as a memory hard disk, card motherboard around the 1/2/4 USB ports and a 10/100 Ethernet interface (A-type does not have a network port), can be connected to the keyboard, mouse and network cable, and at the same time has a video analog signal TV output interface and HDMI high-definition video output interface, the above components All of these components are integrated on a motherboard that is only slightly larger than a credit card, and it has all the basic functions of a PC, such as spreadsheets, word processing, playing games, HD video playback, and many other functions that can be performed by simply connecting a TV and keyboard. The Raspberry Pi B is supplied with a PC board only, no memory, power supply, keyboard, case or cables.
The Raspberry Pi is manufactured through three companies with manufacturing licenses, Element 14/Premier Farnell, RS Components and Egoman, all of which sell the Raspberry Pi online. Now you can buy the Raspberry Pi you want from domestic websites such as Jingdong and Taobao.
The Raspberry Pi Foundation offers ARM-based distributions of Debian and Arch Linux for public download. There are also plans to provide support for Python as the primary programming language, as well as support for programming languages such as Java, BBC BASIC (via RISC OS image or Linux "Brandy Basic" clone), C, and Perl. [1]
On May 29, 2020, the Raspberry Pi Foundation announced the release of a new SKU of the Raspberry Pi 4B, an 8GB RAM version. [6]
Parameters for each version
Model number
Model A
Model A+
Model B
Model B+
Model 2 Generation B
Model 3 Generation B
Model 3 Generation B+
SOC
BroadcomBCM2835 ( CPU, GPU, DSP and SDRAM, USB)
Broadcom BCM2836
Broadcom BCM2837
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CPU
ARM1176JZF-S core (ARM11 family) 700MHz
ARM Cortex-A7 (ARMv7 series) 900MHz (quad-core)
ARM Cortex-A53 1.2GHz 64-bit quad-core ARMv8 CPU
ARM Cortex-A53 CPU
GPU
Broadcom VideoCore IV, OpenGL ES 2.0,1080p 30 h.264/MPEG-4 AVC HD decoder
-
Memory
256 MB (shared with GPU***, which can be interpreted as the integrated graphics card's graphics memory shared with the memory***)
512MB
1GB (LPDDR2)
1GB
.
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Different Versions
Early
The Raspberry Pi had two models in the early days, A and B. The main differences are: Model A: 1 USB, no wired network interface, power 2.5W,500mA, 256MB RAM; Model B: 2 USB, wired network support, power 3.5W, 700mA, 512MB RAM.
Raspberry Pi model B+
Raspberry Pi model B+
Raspberry Pi launched two models, B+ and A+, in July and November 2014, respectively, with the main difference: Model A has no network interface, and shrinks the four USB ports to one. In addition, compared to Model B, Model A memory capacity has been reduced, and has a smaller size design.Model A can be said to be Model B cheap version. Despite being a cheaper version, the new Model A also supports the same MicroSD card reader, 40-pin GPI connector, Broadcom BCM2385 ARM11 processor, 256MB of RAM, and HDMI output as the Model B. The new Model A is also a cheaper version of the Model B, and is designed to be more compact and more compact.
Configuration-wise, the model B+ uses the same BCM2835 chip and 512MB of RAM as the model B, but compared to its predecessor, the B+ version consumes less power and has a wider variety of interfaces. model B+ has increased the number of general-purpose input and output pins to 40, and the USB ports have increased to four, up from the two in the B version, and on top of that, the The power consumption of the model B+ has been reduced by about 0.5W to 1W, the old SD card slot has been replaced with a more aesthetically pleasing push-in microSD card slot, and the audio section is powered by a low-noise supply. In terms of form factor, the USB port has been moved to one side of the motherboard, composite video has been moved to where the 3.5mm audio port is, and four separate mounting holes have been added.
Differences between the Raspberry Pi Model A and Model B
The Raspberry Pi Model A has 256MB of built-in RAM, comes with a USB port, and doesn't come with a wired network interface.
The Raspberry Pi Model B has 512MB of built-in memory with two USB ports and a 100M wired network interface.
Note: The Raspberry Pi Model B machines released before October 15, 2012 have 256MB of memory.
Difference between Raspberry Pi Model B and Model B+
In July 2014, the "Raspberry Pi B+" version was released, still using the BCM2835 processor and the same system software as the previous generation of Raspberry Pi. Pi with the same system software. The memory is also still 512MB; however, improvements have been made in the following key components:
More GPIO pins, 40 pins! (The old version was 26 pins)
More USB ports, 2 more than the old version, 4! And improved hot-plugging and over-current protection.
Replaced the old SD socket with a Micro SD socket.
Lower power consumption, reduced power consumption by 0.5~1W.
Audio optimization, the audio circuit uses a dedicated low noise power supply.
Cleaner form factor, the B+ version aligns the USB ports with the board edges, removes the AV ports, and makes 4 fixing holes on the motherboard for easy fixing.
Raspberry Pi 2 is 1.5x faster than its predecessor
CPU single-threaded speed is up by 1.5x
Sunspider scores are up by 4x faster
NEON-based multicore video decoding is up by 20x faster
SysBench overall multithreading is now up by 20x faster. SysBench overall multi-threaded CPU scores are 6x (6x)
Difference between Raspberry Pi Model 2B and Raspberry Pi Model B
Powered by a 900MHz quad-core ARM Cortex-A7 processor (900MHz quad-core ARM Cortex-A7 CPU), with an expected performance of 6x that of the previous B+ version.
1GB LPDDR2 SDRAM, 2x the previous B+ version.
Full compatibility with Gen 1.
Because the CPU has been upgraded to the ARM Cortex-A7 family, Raspberry Pi 2 will support running the full range of ARM GNU/Linux distributions. This includes Ubuntu and even Microsoft's Windows 10.
Red Edition Raspberry Pi