What is Raspberry Pi?
The Raspberry Pi is a series of small, affordable single-board computers developed by the Raspberry Pi Foundation in the United Kingdom. Originally designed to promote computer science education in schools, it has evolved into one of the most versatile computing platforms ever created — powering everything from home servers and media centers to industrial IoT systems and scientific research instruments.
A Brief History
The story of Raspberry Pi begins in 2006 when Eben Upton, Rob Mullins, Jack Lang, and Alan Mycroft at the University of Cambridge noticed a decline in the skill level of incoming computer science students. They envisioned a cheap, hackable computer that would inspire a new generation of programmers — much like the BBC Micro had done in the 1980s.
The first Raspberry Pi — the Model B — launched on February 29, 2012, at a price of just $35. It sold out within hours. Since then, over 60 million units have been sold worldwide, making it one of the best-selling British computers of all time.
Current Raspberry Pi Models
| Model | CPU | RAM | Key Features | Price (USD) | Best For |
|---|---|---|---|---|---|
| Raspberry Pi 5 | BCM2712, Cortex-A76 @ 2.4 GHz (quad-core) | 4GB / 8GB LPDDR4X | PCIe 2.0, dual 4K HDMI, USB 3.0, RP1 southbridge | $60 – $80 | Desktop replacement, servers, AI/ML |
| Raspberry Pi 4 Model B | BCM2711, Cortex-A72 @ 1.8 GHz (quad-core) | 1GB / 2GB / 4GB / 8GB | Dual 4K HDMI, USB 3.0, Gigabit Ethernet | $35 – $75 | General purpose, home servers |
| Raspberry Pi Zero 2 W | BCM2710A1, Cortex-A53 @ 1 GHz (quad-core) | 512MB | Wi-Fi, Bluetooth, mini HDMI, micro USB OTG | $15 | IoT, embedded, wearables |
| Raspberry Pi Pico / Pico 2 | RP2040 / RP2350 (dual-core ARM + RISC-V) | 264KB / 520KB SRAM | Microcontroller, GPIO-rich, no OS needed | $4 – $5 | Microcontroller projects, sensors |
Raspberry Pi 5 — the latest and most powerful model — Photo: Wikimedia Commons (CC BY-SA)
Raspberry Pi 4 Model B — the versatile workhorse — Photo: Wikimedia Commons (CC BY-SA)
Raspberry Pi Zero 2 W — compact and affordable — Photo: Wikimedia Commons (CC BY-SA)
Raspberry Pi Pico — a microcontroller board — Photo: Wikimedia Commons (CC BY-SA)
Why Raspberry Pi Matters
- Education — Used in schools and universities worldwide to teach programming, electronics, and computer science. The Raspberry Pi Foundation provides free curriculum and resources.
- Affordability — A fully functional computer starting at $15 means everyone can learn to code and build projects regardless of economic background.
- IoT and Industry — Powers industrial automation, agricultural sensors, environmental monitoring, and smart city infrastructure.
- Community — One of the largest maker communities in the world, with thousands of tutorials, forums, and open-source projects available.
- Linux Gateway — Raspberry Pi runs Linux natively, making it the perfect entry point into the world of open-source operating systems and server administration.
Fun fact: Raspberry Pi computers have been sent to the International Space Station as part of the Astro Pi program, where students write code that runs in space.