Raspberry Pi 4 Model B is the fourth generation produced by the Raspberry Foundation. Not only is it suitable for learning to program, develop and play games, but it is also perfect for IoT projects. The Raspberry Pi 4 offers more processing power, more memory, and more connectivity, while maintaining full backwards compatibility with projects created with previous versions. It features a quad-core 1.5GHz 64-bit ARM Cortex-A72 CPU, delivering performance comparable to entry-level x86 PC systems. It provides dual-display support for resolutions up to 4K via a pair of HDMI-micro ports, 4GB of RAM , hardware video decoding up to 4Kp60, dual-band 2.4/5.0 GHz wireless LAN, Bluetooth 5.0, Gigabit Ethernet, USB 3.0, and Power over Ethernet (PoE) via PoE HAT-specific add-ons.

Technical specifications:

• Full compatibility with previous versions of Raspberry Pi
• Processor: Broadcom BCM2711B0 quad-core A72 (ARMv8-A) 64-bit @ 1.5GHz
• GPU: Broadcom VideoCore VI, OpenGL ES 3.x support
• Dual monitor support , with up to 4K resolution
• 4Kp60 hardware decode of HEVC video
• Networking: 2.4 GHz and 5 GHz 802.11b/g/n/ac wireless LAN
• RAM: 1GB, 2GB, or 4GB LPDDR4 SDRAM (depending on model)
• Bluetooth: Bluetooth 5.0, Bluetooth Low Energy (BLE)
• GPIO: 40-pin GPIO header, populated
• Storage: microSD (minimum 8GB)
• Doors:
  – 2 × micro-HDMI 2.0,
  – 3.5 mm analog audio-video jack
  – 2 × USB 2.0
  – 2 × USB 3.0
  – Gigabit Ethernet
  – Camera Serial Interface (CSI)
  – Display Serial Interface (DSI)
• Size: 88mm × 58mm × 19.5mm, 46g
• Input power: 5V DC via USB-C connector (min 3A)
• Working temperature: 0°C to +50°C.

What is Raspberry Pi?

A Raspberry Pi is a compact computer board that offers endless possibilities. From the beginning, Raspberry Pi was designed to be simple to use and simple to adapt to what you want to do with it.
Simply connect a TV or monitor, a keyboard, a mouse and a power supply and you are ready to go. One of the great things about Raspberry Pi is that it is suitable for almost all age groups. Whether it is explaining the programming for children, or to be used by engineers to build complex computer-controlled systems, anyone can use one.
There are a wide range of “HATs” (Hardware Attached Top) and other accessories that you can attach to the Raspberry Pi and add specific features such as:

• Cameras
• LCD display
• Motor Drivers
• Sensors
• GPS
• Mobile data connection
• Digital TV decoders

Raspberry Pi is one of the best-selling computers of all time, with 25 million sold to date. (Feb 2019).