Since its inception, it has been sought after by many computer enthusiasts and makers, and it was once hard to find "pies". Although petite in appearance, but strong in heart, audio-visual and other functions are readily available. It can be said that "the sparrow is small and complete."
20 19 12 16, Time magazine recently selected "the most influential 10 technology product in 10", and raspberry pie ranked third.
On May 29th, 2020, the Raspberry Pie Foundation announced the launch of the new SKU of Raspberry Pie 4B, namely the 8GB RAM version.
Basic information
Chinese name
raspberry pi
Foreign name
raspberry pi
Another name
RPi
brand
Raspberry pie foundation
type
A/A+/B/B+/ Type B of the second generation/Type B of the third generation
Spread out completely
Mini computer
raspberry pi
raspberry pi
Raspberry Pie was developed by Raspberry Pi Foundation, a charity registered in the UK, and the project leader was Eben Upton/E Upton. 20 12 in March, Eben Epton of Cambridge University officially launched the world's smallest desktop computer, also known as card computer. Its shape is only the size of a credit card, but it has all the basic functions of a computer. This is the computer board of Raspberry Pie, which is translated as "Raspberry Pie" in Chinese. The purpose of this foundation is to improve the education of computer science and related disciplines in schools and make computers interesting. The foundation predicts that more and more other applications of this computer will be continuously developed and applied to more fields, whether in developing countries or developed countries. In 2006, the early concept of Raspberry Pie was ATmega644 single-chip microcomputer based on Atmel, and the first batch of 10000 Raspberry Pie "boards" were made by manufacturers in Taiwan Province Province and Chinese mainland, China.
It is a microcomputer motherboard based on ARM, with SD/MicroSD card as memory hard disk. There are 1/2/4 USB interface and1100 Ethernet interface around the card motherboard (type A has no network port), which can connect keyboard, mouse and network cable, as well as a TV output interface for video analog signals and an HDMI high-definition video output interface. All the above components are integrated on a motherboard only slightly larger than a credit card, which has all the basic functions of a PC. You can perform many functions, such as spreadsheets, word processing, playing games, playing high-definition videos and so on, just by connecting the TV and keyboard. Raspberry pie B only provides computer board, no memory, power supply, keyboard, chassis and connection.
Raspberry pie is produced by three licensed companies, Element14/Premier Farnell, RS Components and Egoman. All three companies sell raspberry pies online. Now, you can buy the raspberry pie you want on domestic websites such as JD.COM and Taobao.
The Raspberry Pie Foundation provided the distributions of Debian and Arch Linux based on ARM for the public to download. It is also planned to support Python as the main programming language, and support Java, BBC BASIC (through RISC OS image or "Brandy Basic" clone of Linux), C and Perl. [ 1]
On May 29th, 2020, the Raspberry Pie Foundation announced the launch of the new SKU of Raspberry Pie 4B, namely the 8GB RAM version. [6]
Parameters of each version
model
Type a
A+ type
Type b
B+ type
Second generation type b
Third generation type b
Third generation B+ type
sociology
BroadcomBCM2835(CPU, GPU, DSP, SDRAM and USB)
Broadcom BCM2836
Broadcom BCM2837
-
cpu
The ARM 1 176JZF-S core (ARM 1 1 series) is 700MHz.
ARM Cortex-A7 (ARMv7 series) 900MHz (quad-core)
ARM Cortex-A53 1.2GHz 64-bit quad-core ARMv8 CPU
ARM Cortex-A53 CPU
National Political Security Bureau. See OGPU
Broadcom VideoCore IV, OpenGL es 2.0, 1080p 30h.264/mpeg-4 AVC HD decoder.
-
internal storage
256 MB (shared with GPU, which can be understood as memory sharing of video memory and integrated graphics card)
5 12MB
1GB (LPDDR2)
1GB
.
Spread out completely
Different versions
early stage
There were two kinds of early raspberry pies: A: 1 USB, without wired network interface, with power of 2.5W, 500mA and 256MB RAM；; Type b: 2 USB, supported by wired network, with power of 3.5W, 700mA, 5 12MB RAM.
Raspberry pie model B+
Raspberry pie model B+
In July of 20 14 and June of10, Raspberry Pie introduced two models, B+ and A+, respectively. The main difference is that Type A has no network interface, and the four USB ports are reduced to 1. In addition, compared with Type B, Type A has smaller memory capacity and smaller size design. Model A can be said to be a cheap version of model B. Although it is a cheap version, the new Model A also supports the same MicroSD card reader as Model B, 40-pin GPI connection port, Broadcom BCM 2385 arm11processor, 256MB memory and HDMI output port.
In terms of configuration, version B+ uses the same BCM2835 chip and 5 12MB memory as type B, but compared with the previous generation, version B+ has lower power consumption and richer interfaces. In addition, the power consumption of model B+ is reduced by about 0.5W to1W. The old SD card slot is replaced by a more beautiful push-in microSD card slot, and the audio part is powered by low noise. From the appearance, the USB interface moved to the side of the motherboard, and the composite video moved to the position of the 3.5mm audio port, adding four independent installation holes.
The difference between raspberry pie type a and type b
Raspberry Pie A has built-in 256MB memory, a USB port and no wired network interface.
Raspberry Pie B has built-in 5 12MB memory, two USB ports and 100M wired network interface.
Note: The memory of model B sold before 2065438+021June1May is 256MB.
The difference between raspberry pie type b and type B+
On July 20 14, the version of "Raspberry Pie B+" was released, and it still uses the BCM2835 processor and the same system software as the previous generation of Raspberry Pie. Memory is still 512mb; However, the following key components have been improved:
More GPIO pins, 40 pins! (The old version was 26 stitches)
There are more USB interfaces, 2 more than the old version and 4 more! And the hot plug and overcurrent protection are improved.
Replaced the old SD socket with Micro SD socket.
Lower power consumption, reducing power consumption by 0.5 ~1w.
Audio optimization, audio circuit adopts special low noise power supply.
A more concise appearance, the B+ version aligns the USB interface with the edge of the circuit board, removes the AV interface, and makes four fixing holes on the motherboard for easy fixing.
Raspberry pie 2 compared with the previous generation
CPU single-thread speed is increased by 1.5 times (increased by 1.5 times).
Sunspider's running performance has improved four times (four times faster).
NEON-based multi-core video decoding rate is increased by 20 times (20 times faster).
The overall multithreaded CPU score of SysBench is 6 times (6x) that of the old version.
Difference between 2B raspberry pie and B raspberry pie
Equipped with a 900MHz quad-core processor (900MHz quad-core ARM Cortex-A7 CPU), the performance is expected to be 6 times that of the previous B+ version.
1GB LPDDR2 SDRAM, which is twice that of the previous B+ version.
Fully compatible with 1 generation.
Since the CPU has been upgraded to the ARM Cortex-A7 series, Raspberry Pi 2 will support the full range of ARM GNU/Linux distributions. Including Ubuntu and even Microsoft's Windows 10.
Raspberry pie