What Is Raspberry Pi, All You Must Know in 2023

Sherly updated on Feb 22, 2023 | Home > Knowledge Center

The Raspberry Pi is a microcomputer that has experienced exceptional growth since its creation in 2012. Its size, price, and features it offers are the factors that have led to popular. A Raspberry PI is a computer the size of a credit card. Sounds amazing right? Read more to learn about Raspberry Pi. In this article, we're going to discuss it and its functionality in more detail.

What Is Raspberry Pi

A Raspberry Pi consists of a motherboard that supports different components of a computer, such as an ARM processor of up to 1500 MHz, a graphics chip, and RAM of up to 8 GB. In addition, it has many other functionalities like ports and inputs, allowing you to connect peripheral devices. You can connect it to a touch screen, a keyboard, and even a television. Also, it includes a VideoCoreIV graphics processor, which lets video playback in high definition. Raspberry connects to the network through the Ethernet port, and some models connect to Wi-Fi and Bluetooth.

what is raspberry

There are several models of Raspberry Pi. Here are a few of them.

Raspberry Pi Models:

  • Raspberry Pi Zero

Raspberry Pi Zero has a similar processor and RAM as the Raspberry Pi 1 Model B+. This machine has a single-core ARM processor with 512MB of RAM.

  • Raspberry Pi 1

This is the first generation and basic version of the Raspberry Pi. Raspberry Pi 1 Model B formed the baseline for its size for all upcoming Pi devices. However, a few features are quite different compared to other Raspberry Pi models and generations. Initially, its RAM was 256MB, and it increased to 512MB.

  • Raspberry Pi 2 B

The Raspberry Pi 2 Model B was a significant upgrade over the original release, bringing improved performance and memory capabilities. The device was equipped with a new quad-core processor clocked at 900 MHz, which was a 200 MHz increase, and had four times as many cores as the original. The amount of RAM also doubled from 512 MB to 1024 MB, making it easy to run more demanding programs. 

  • Raspberry Pi 3

The Raspberry Pi 3 Model B achieved a major milestone in developing the Raspberry Pi series, integrating both Wi-Fi and Bluetooth connectivity directly onto the board, eliminating the need for additional components to achieve wireless connectivity. 

  • Raspberry Pi 4 Model B

The Raspberry Pi 4 Model B saw significant updates, including a change in processor, memory, USB ports, power connector, HDMI output, and networking. The team upgraded the processor to the Cortex-A72, a more efficient and higher-performing microarchitecture that clocked 100 MHz faster than the older core. 

  • Raspberry Pi 400

The Raspberry Pi 400 is a new form factor in the Pi family, featuring a built-in keyboard for ease of use.

The Raspberry Pi differs from traditional computers in the following ways in regard to the listed features:

Raspberry Pi Features:

  • Central Processing Unit (CPU): Raspberry Pi's CPU is low-power compared to traditional desktop or laptop CPUs and uses an ARM architecture instead of x86.
  • HDMI port: The Raspberry Pi has a full-sized HDMI port for video output, unlike traditional computers that may use a mini or micro HDMI port.
  • Graphic Processing Unit (GPU): Raspberry Pi has a built-in GPU for basic graphics and video rendering, but it's not as powerful as dedicated GPUs in traditional computers.
  • Memory (RAM): Raspberry Pi has less RAM compared to traditional computers, ranging from 1GB to 8 GB.
  • Ethernet port: The Raspberry Pi has a standard Ethernet port for wired network connections.
  • SD card slot: Raspberry Pi uses an SD card slot for storage instead of a traditional hard disk drive (HDD) or solid-state drive (SSD).
  • General Purpose Input and Output (GPIO) pins: The Raspberry Pi has a row of GPIO pins for interfacing with other devices, not typically found on traditional computers.
  • LEDs: The Raspberry Pi has a set of status LEDs, not present on all traditional computers.
  • USB ports: The Raspberry Pi has fewer USB ports compared to traditional computers, ranging from 2 to 4.
  • Power source: The Raspberry Pi is powered by a micro USB power source, unlike traditional computers that use a power supply unit (PSU).

The Raspberry Pi is a versatile device with a range of uses, from creating a desktop PC to controlling IoT robots, acting as a printer server, replacing web servers, converting into retro gaming machines, attaching to surveillance cameras, supporting digital signage, conducting network penetration tests, and providing data to business intelligence dashboards.

Raspberry Pi Usages:

Constructing a desktop PC: Raspberry Pi can build a fully functional desktop computer with all the necessary components like a keyboard, monitor, etc.

Enabling media usage: Raspberry Pi can be a media device to play videos and music and view pictures.

Controlling IoT robots: Raspberry Pi can be used to control IoT robots and automate tasks using programming languages.

Acting as a printer server: Raspberry Pi can connect a printer and make it accessible to multiple devices over a network.

Replacing web servers: Raspberry Pi can be used as a low-cost alternative for web servers for small-scale businesses and personal websites.

Converting into retro gaming machines: Raspberry Pi can be converted into a retro gaming machine by installing the appropriate software.

Attaching to surveillance cameras: Raspberry Pi can be attached to cameras and used for surveillance purposes.

Supporting digital signage: Raspberry Pi can be used to support digital signage displays for advertisements, notifications, and other information.

Conducting network penetration tests: Raspberry Pi can be used for network penetration testing, which involves testing the security of a network.

Providing data to business intelligence dashboards: Raspberry Pi can collect data and provide insights to business intelligence dashboards.

How Does Raspberry Pi Work

The Raspberry Pi is the little computer invented for teaching, ideal for developing electronic projects and learning to program. It can also perform various tasks such as web browsing, document writing, and playing video games. The Raspberry Pi has broad user-level applications, including being used as a computer, multimedia center, private server, game console emulator, for electronic projects, and video surveillance.

The Raspberry PI has limitations. Its speed is not extremely fast, and it's not suitable for high-end tasks. However, for low-end tasks, it's best. You should understand that the Raspberry PI does not have an on/off circuit. This microcomputer has a low consumption, but it must be connected to the current through a charger. For this, one of about 2.5 amps and 5 volts is recommended.

If we talk about operating systems, installing Raspberry Pi OS -formerly Raspbian- is recommended. However, it is also compatible with Linux and a specific version of Windows.


The Raspberry Pi is available in different models with prices ranging from $5 to $75, based on the features offered. Visit their product website to compare features and prices. The Raspberry Pi is a versatile and cheap microcomputer that offers opportunities for both learning and experimentation. With different models ranging in price and functionality, you can discover the one that suits your needs. To get the best Raspberry Pi machine, we recommend you explore its official site and take advantage of the online resources and tutorials.

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Updated by Daisy

Daisy is the Senior editor of the writing team for EaseUS. She has been working in EaseUS for over ten years, starting from a technical writer to a team leader of the content group. As a professional author for over 10 years, she writes a lot to help people overcome their tech troubles.

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Written by Sherly

Sherly joined EaseUS in 2022 and she has always loved writing articles and enjoys the fun they bring. She receives professional training here, focusing on product performance and other relative knowledge.

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