Questions relating to the physical components that the Raspberry Pi consists of.
An overview of the Raspberry Pi board
Component List
Model A
+-------------------------+------------------------+-----------------------+
| System-on-a-chip (SoC): | Broadcom BCM2835 (CPU + GPU + SDRAM) |
| CPU: | 700 MHz ARM11 ARM1176JZF-S core |
| GPU: | Broadcom VideoCore IV,OpenGL ES 2.0,OpenVG |
| | 1080p30 H.264 high-profile encode/decode |
| Memory (SDRAM)iB | 256 MiB |
| USB 2.0 ports | 1 |
| Video outputs | Composite video,Composite RCA, HDMI |
| Audio outputs | TRS connector 3.5 mm jack, HDMI |
| Audio inputs | None |
| Onboard Storage | SD / MMC / SDIO card slot |
| Onboard Network | None |
| Low-level peripherals | General Purpose Input/Output (GPIO) pins, |
| | Serial Peripheral Interface Bus (SPI), I²C, |
| | I²S[2], Universal asynchronous |
| | receiver/transmitter (UART) |
| Real-time clock | None |
| Power ratings | 500mA, (2.5 Watt) |
| Power source | 5V via Micro USB or GPIO header |
| Size | 85.60mm x 53.98mm (3.370 × 2.125 inch) |
+-------------------------+------------------------------------------------+
Model B
Same as above with the following additions:
+-------------------------+------------------------------------------------+
| USB 2.0 ports | 2 |
| Power ratings | 700mA, (3.5 Watt) |
| Onboard Network | 10/100 wired Ethernet RJ45 |
+-------------------------+------------------------------------------------+
