Have you ever heard of Raspberry Pi ? In this article, let's take a look at what this very cool little computer is, and briefly introduce what you can do with it.
also covers all current iterations of Pi and their characteristics. Each version is slightly different, and one version may be more suitable for your needs than the other.
Basic knowledge of Raspberry Pi
Raspberry Pi is a small computer about the size of a credit card. This board has a processor, memory, and standard hardware ports, which you can find on most computers.
Raspberry Pi has all the functions of a computer, so you can use it to do most desktop computers can do. Tasks such as document editing, playing high-definition video, playing games, programming, etc.
Obviously, the processing power of the Raspberry Pi is not as good as that of a desktop computer, but because it is much cheaper, it is a small computer you can toss about at will. If you accidentally break one, you won’t spend a lot of money to replace it.
Pi can also do many things that do not require expensive computers, such as running as a home NAS (network storage), network server, media center, TorrentBox, and more.
Operating System
The main operating system of the Raspberry Pi is Raspbian, which is based on Debian. This is a Linux distribution, so if you are used to using a Windows computer, you may find it a little different.
Although the main supported operating system is Raspbian, other operating systems can also be installed. The operating systems that can be installed include Ubuntu mate, Ubuntu Core, OSMC, RISC OS, Windows 10 IoT, and so on.
If you are looking for a Raspberry Pi project, then please go to my homepage,I am organizing and recording a lot of cool projects on Raspberry Pi.
has many different models of Pi, I will talk about their characteristics one by one.
Raspberry Pi A+
Raspberry Pi A+ is a low-spec and cost-effective version of Pi. This version has only one USB port, low power consumption, no Ethernet port, only 256mb of memory. The memory of the latest version is 512mb.
This version of Pi is more suitable for projects that do not require considerable processing power, and has a lighter weight and smaller size.
can use this board to do many things, such as robots, remote control planes, remote control cars and embedded project. To cite a few examples, it can become the brain of a robot, a touch screen car dashboard, a motion sensing camera, and so on.
Raspberry Pi B+ and B
Raspberry Pi B+ and B are old versions of Pi, which have now been replaced by Pi 2.
B+ version uses single-core CPU, 4 USB ports, microSD card slot, lower power consumption.
This model has been improved on the basis of the previous B model with only two USB ports. It has higher power consumption and a full-size SD card slot.
is still available for B+ models, but will gradually be replaced by better Pi versions.
Raspberry Pi 2
Raspberry Pi 2 is the second generation of Pi. This Pi and B+ version is one of the most popular versions.
Pi 2 is a replacement product of B+, using a 900MHz quad-core CPU and 1GB of memory. The remaining specifications are consistent with the previous generation models.
I have listed its features below.
- 40-pin expansion GPIO
- 4x USB 2.0 port
- stereo output and composite video port
- HDMI interface
- CSI (camera interface interface) and DSI (display serial interface ) ports.
- Micro SD card slot
- Micro USB power supply
This version of Pi has now been replaced by more powerful Pi 3 and 4.
Raspberry Pi 3 & 3 B+
Raspberry Pi 3 is the second new version of Pi, surpassing the second version in terms of performance and functionality. This version provides some additional features to make the use of Pi easier.
This version of Pi brings a new CPU, clock frequency is 1.2Ghz, and it is 64-bit, but only 32-bit operating system can be installed on Pi 3.
Pi 3 also has onboard Wi-Fi (802.11n) and Bluetooth 4.1. These new features will enable you to do some cool things, and there are also more USB ports.
The rest of the board remains basically unchanged.
Below I have listed the new features.
- Broadcom BCM2387 chipset
- 1.2GHz 64-bit quad-core ARM Cortex-A53 CPU.
- integrates 802.11n wireless LAN and Bluetooth 4.1.
You can also buy Raspberry Pi 3 B+ now,It has some minor upgrades, but not as many as the new Pi 4.
Raspberry Pi 4
Raspberry Pi 4 is the latest version of the Raspberry Pi family and the best board so far. It has undergone many hardware upgrades, making it far better than the previous generation.
This version brings a 1.5GHZ quad-core ARM Cortex-A72, which is much better than the previous generation.
This Raspberry Pi also has more memory options. For example, you can choose the classic 1gb version, 2gb and 4gb.
More improvements make this board very attractive to enthusiasts and ordinary users. 4gb makes it a very viable alternative to desktop computers.
All the new features in Raspberry Pi 4 are listed below.
- 1.5GHz quad-core 64-bit ARM Cortex-A72 CPU (about 3 times the performance).
- 1GB, 2GB or 4GB LPDDR4 SDRAM.
- Full Gigabit Ethernet
- Dual-band 802.11ac wireless network
- Bluetooth 5.0
- Two USB 3.0 and two USB 2.0 ports
- supports dual displays with a resolution of up to 4K.
- VideoCore VI graphics, support OpenGL ES 3.x.
- 4Kp60 HEVC video hardware decoding method
- is fully compatible with earlier Raspberry Pi products
I talked more about Raspberry Pi 4 in a special article, if you have time, be sure to check it out.
Raspberry Pi Zero and Zero W
Raspberry Pi Zero is currently the smallest and cheapest of all Pis.
The price of this board is 66 yuan, and it is equipped with the basic functions of Pi on an ultra-small board.
Although this Pi cannot handle a lot of processing work, it is very suitable for embedded projects. It is also very suitable for projects that do not require a lot of processing power or memory, just like Pi A+.
The following is a summary of the features of Zero.
- 1Ghz, single-core CPU
- 512MB RAM
- Mini HDMI
- Micro USB interface
- Micro USB power supply
- Micro SD card interface
- _lili78 reset header compatible with li40 pin header li78li
Raspberry Pi Zero W has wireless function, which is very convenient on such a small board, which can use WiFi and Bluetooth.
I hope this article can help you understand what Raspberry Pi is and what you can do with Raspberry Pi.
If you have questions and feedback, please leave a message below.
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