Raspberry Pi is a low-cost, basic computer that was originally intended to help spur interest in computing among school-aged children. The Raspberry Pi is contained on a single circuit board and features ports for: HDMI. USB 2.0. Composite video.
Various operating systems for the Raspberry Pi can be installed on a MicroSD, MiniSD or SD card, depending on the board and available adapters; seen here is the MicroSD slot located on the bottom of a Raspberry Pi 2 board.The Raspberry Pi Foundation recommends the use of Raspbian, a Debian-based Linux operating system. Other third party operating systems available via the official website include Ubuntu MATE, Snappy Ubuntu Core, Windows 10 IoT Core, RISC OS and specialised distributions for the Kodi media center and classroom management.
Specifications and performance
As for the specifications, the Raspberry Pi is a credit card-sized computer powered by the Broadcom BCM2835 system-on-a-chip (SoC). This SoC includes a 32-bit ARM1176JZFS processor, clocked at 700MHz, and a Videocore IV GPU. It also has 256MB of RAM in a POP package above the SoC. The Raspberry Pi is powered by a 5V micro USB AC charger or at least 4 AA batteries (with a bit of hacking).
What does the Raspberry Pi do?
The allure of the Raspberry Pi comes from a combination of the computer’s small size and affordable price. Enthusiasts envision using the small form-factor PC as a cheap home theater PC (HTPC), or secondary low-power desktop. Institutions, like schools and businesses, could benefit from deploying a fleet of computers for a fraction of the cost of traditional desktop towers.
CPU: Quad-core 64-bit ARM Cortex A53 clocked at 1.2 GHz
GPU: 400MHz VideoCore IV multimedia
Memory: 1GB LPDDR2-900 SDRAM (i.e. 900MHz)
USB ports: 4
Video outputs: HDMI, composite video (PAL and NTSC) via 3.5 mm jack
Network: 10/100Mbps Ethernet and 802.11n Wireless LAN
Peripherals: 17 GPIO plus specific functions, and HAT ID bus
Power source: 5 V via MicroUSB or GPIO header
Size: 85.60mm × 56.5mm
Weight: 45g (1.6 oz)