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== Hardware ==
The primary design goal for the Raspberry Pi was to create a low-cost essential processing element of a computer, using connections like HDMI and composite video allowing it to be used with a television, powered by a cellphone charger and second-hand peripherals, to build a complete and cost-effective system. However as the product has matured the equipment has been designed to be flexible enough to allow for more sophisticated setups.
The Raspberry Pi has undergone multiple hardware revisions, with changes in processor type, memory capacity, networking features, and peripheral support.<ref>{{Cite web |last=Khaliq |first=Azzief |date=27 April 2024 |title=The Evolution Of Raspberry Pi: From Prototype To Single-Board Computing Workhorse |url=https://www.slashgear.com/1566508/raspberry-pi-history-evolution-small-single-board-computer/ |access-date=26 November 2024 |website=SlashGear}}</ref>▼
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Processor speeds have ranged from 700 MHz on early models to 2.4 GHz on the Raspberry Pi 5. RAM has increased from 256 MB on the original model to up to 16 GB on the Pi 5. Storage is typically provided via a [[SD card]], though some Compute Module variants include onboard [[eMMC]] storage.<ref>{{Cite web |title=Flashing the Compute Module eMMC |url=https://www.raspberrypi.org/documentation/hardware/computemodule/cm-emmc-flashing.md |access-date=14 July 2021 |website=Raspberry Pi Documentation}}</ref> Newer models also support booting from USB-attached drives, and the Pi 5 can boot from [[NVM Express|NVMe]] drives connected via the [[PCI Express|PCIe]] interface.<ref>{{Cite web |last=Geerling |first=Jeff |title=I'm booting my Raspberry Pi 4 from a USB SSD |url=https://www.jeffgeerling.com/blog/2020/im-booting-my-raspberry-pi-4-usb-ssd |access-date=14 July 2021 |website=JeffGeerling.com}}</ref><ref>{{Cite web |last=Geerling |first=Jeff |date=14 May 2024 |title=microSD cards' SBC days are numbered |url=https://www.jeffgeerling.com/blog/2024/microsd-cards-sbc-days-are-numbered |access-date=8 June 2025 |website=JeffGeerling.com}}</ref> Digital video and audio output to a display is offered via [[HDMI]].
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