Raspberry pi, find out everything about the most famous single board mini PC
Sometimes size doesn't matter, as is the case with the Raspberry Pi. Project of the foundation of the same name, the Raspberry Pi Foundation, this computer is the mini PC a
Most famous single card in the world.
Born in 2012 and grown thanks to a solid community of supporters, this PC has "overturned" the concept of IT and modern computers , aiming to rediscover its essence.
What is the Raspberry Pi
Mini PC ideal as a basis for creating hardware projects, that's what Raspberry PI is.
Introduced on February 29, 2012, this single-board computer is designed to run Linux or Risc Os-based operating systems. Made in the UK, the Raspberry Pi is assembled in Wales, at the Sony UK Technology Centre.
In addition to innovative and unique hardware, Raspberry also uses something unique and exclusively developed at the operating system level, the Raspberry Pi OS.
An alternative to the equally famous Arduino, the Raspberry Pi was born as a test bed and tester for robotics and research projects, both at an amateur and professional level.
How Raspberry Pi works
Mini computer mounted on a single pre-configured and expandable board is combined with a programming platform which guarantees complete expandability.
In its standard configuration the Raspberry Pi includes a LAN port, USB connectivity, an HDMI port, a memory card slot, an audio jack and a Mini USB for power.
In the various dedicated or "expanded" versions, the Raspberry Pi can have many other ports and outputs that allow it to connect to external output systems (monitors and printers) or input systems (such as webcams).
What is the Raspberry Pi for?
It is a real mini computer , which in addition to being used with the same functions as a personal computer, can become the basis for many other projects and configurations.
Raspberry Pi is in fact an excellent base from which to start, a "foundation" that programmers have used for many projects over time. The Raspberry Pi has been used to create video games, simulate portable game consoles, control and manage the movements of more or less complicated robots, cameras and webcams.
Just like Arduino, with which it can also be integrated for a multiplication of possibilities and functionalities of use, Raspberry Pi is a complete and high-performance solution, an excellent starting point for infinite projects.
Raspberry Pi 
The first "non-Beta" version of Raspberry Pi was produced and sold in 2012 in 10,000 pieces. Already equipped with all the basic components that will then be present in every new model, the Raspberry Pi price is $25.
This version will undergo several updates which will above all increase the USB ports present.
Raspberry Pi2.
Three years after the first launch, Raspberry Pi2 was born. At a cost of $35, the card adds one GB of dedicated RAM, a more powerful processor and for the first time the possibility of Wi-Fi connection.
After version 2, the evolution of Raspberry will continue not only gradually with new versions, but also splitting itself into two for different functions based on the name itself; in fact, models A+ and B+ were born, both third generation of Raspberry.
Raspberry Pi 3 model A+
This version can be considered the cheapest of the two. Compact and inexpensive, it features a single board equipped with a 1.4 GHz processor and 0.52 GB of RAM; Made with a Compact form factor, it focuses entirely on Wi-Fi functionality for network connections, as it is not equipped with a LAN port. Equipped with a total of 3 USB ports between standard and Mini, this configuration is an excellent starting point for many projects.
Pi 3 model B+ version
If your needs are greater, with 10 dollars and a few centimeters of extra space you can opt for the B+ model. This version adds a total of 4 USB 2 ports, an Ethernet port and Bluetooth support to Wi-Fi.
Not just connectivity for this version, which is also equipped with a 1.4 GB 64-bit processor and 1 GB RAM memory. To top it all off, an HDMI port and an input for the Raspberry Pi camera.
An excellent mini PC model is the Raspberry Pi 3 model B+ , a truly complete board with excellent connectivity. The board features 4 USB 2.0 ports , Bluetooth 4.2 connectivity, a 300 Mbps Gigabit Ethernet port and a dual band Wi-Fi module. The heart of the system is the 1.4 GHz 64-bit quad core processor with 1 GB of RAM, running on the Linux platform. It offers a GPIO configuration with 40 pins , a full size HDMI port and a CSI input for connecting the Raspberry Pi camera.
The same type of evolution and fragmentation continues in version 4. Version presented over a period of time ranging from the second half of 2019 to 2020.
Available in various configurations that differ in the amount of RAM, the number of ports and the processor speed. This version has been further differentiated through kits designed for different uses, such as the starter kit or its bigger brother, a slightly more professional version.
Raspberry Pi 4 Model B Starter Kit
Released in 2019, this kit consists of the classic board that houses a 1.5 Ghz processor, 4 GB of RAM and all the possible online and cable connectivity.
This kit then adds to the card a 32 GB microSD card, a screwdriver, a micro HDMI, a card reader and 2 fans for cooling.
Available with more or fewer accessories in various versions, this model "for beginners" usually costs around $140.
Raspberry Pi 4 Model Pro
Available in various versions, compared to the previous model it doubles the amount of RAM reaching 8 GB.
Also in this case fans, accessories and supports are added to the base board, for a myriad of possibilities and possible uses.
Raspberry Pi5 
Still no official date for Raspberry version 5. But the fact that the 4 has been on the market for more than 4 years makes the community think that something is cooking. Rumors follow one another and hypotheses on the possible equipment of the Raspberry Pi5 follow one another.
Standard HDMI ports, fewer bugs, new analog inputs, Bluetooth 5.2, more RAM and new cooling systems. These are just some of the community's hypotheses. And what do you think is surprising about Raspberry Pi5?
