Raspberry pi is single board computer in size of credit card which can be connected to TV and monitor. It is a capable little device that enables people of all ages to explore computing, and to learn how to program in languages like Scratch and Python. It is capable of playing HD videos,playing games,browsing internet and making word processing and spreadsheet.
It can be used in a wide array of;
- Digital maker projects.
- Music machines.
- Parent detectors.
- Weather stations.
- Tweeting birdhouses with infra-red cameras.
Raspberry pi has three versions:
- Raspberry pi model a.
- Raspberry pi model b.
- Raspberry pi model b+
Raspberry pi model a:
Model A is the lower-spec variant of the Raspberry Pi, with 256 MB of RAM, one USB port and no Ethernet port.
This model is usually bought for embedded projects: because it’s missing a few ports and an Ethernet chip, the Model A is lighter and consumes less power than a Model B. We see a lot of Model As used in robotics; and also in projects where weight and low power consumption is needed.
Specification:
| Chip |
| Broadcom BCM2835 SoC full HD multimedia applications processor |
|
|
|
| CPU |
| 700 MHz Low Power ARM1176JZ-F Applications Processor |
|
|
|
| GPU |
| Dual Core VideoCore IV®
Multimedia Co-Processor |
|
|
|
|
|
|
|
| USB 2.0 | | Single USB Connector |
|
|
|
|
| Video Output |
| HDMI (rev 1.3 & 1.4) Composite RCA |
|
|
|
|
| Audio Output |
| 3.5mm jack, HDMI |
|
|
|
|
| Onboard Storage |
| SD, MMC, SDIO card slot |
|
|
|
|
|
|
|
| Dimensions |
| 8.6cm x 5.4cm x 1.5cm |
|
Raspberry pi model b:
Model B is the higher-spec variant of the Raspberry Pi, with 512 MB of RAM, two USB ports and a 100mb Ethernet port. It’s our most popular model: you can use it to learn about computing; to power real-world projects (like home breweries, arcade machines, musical root vegetables, robot tanks and much more); as a web server; a bitcoin miner; or you can just use it to play Minecraft.
Specification:
| Chip |
| Broadcom BCM2835 SoC full HD multimedia applications processor |
|
|
|
| CPU |
| 700 MHz Low Power ARM1176JZ-F Applications Processor |
|
|
|
| GPU |
| Dual Core VideoCore IV®
Multimedia Co-Processor |
|
|
|
|
|
| Ethernet |
| one ethernet port |
|
|
|
| USB 2.0 | | double USB Connector |
|
|
|
|
| Video Output |
| HDMI (rev 1.3 & 1.4) Composite RCA |
|
|
|
|
| Audio Output |
| 3.5mm jack, HDMI |
|
|
|
|
| Onboard Storage |
| SD, MMC, SDIO card slot |
|
|
|
|
|
|
|
| Dimensions |
| 8.6cm x 5.4cm x 1.5cm |
|
Raspberry pi model b+:
The Model B+ uses the same BCM2835 application processor as the Model B. It runs the same software, and still has 512MB RAM; but James and the team have made the following key improvements:
- More GPIO. The GPIO header has grown to 40 pins, while retaining the same pinout for the first 26 pins as the Model B.
- More USB. We now have 4 USB 2.0 ports, compared to 2 on the Model B, and better hotplug and overcurrent behaviour.
- Micro SD. The old friction-fit SD card socket has been replaced with a much nicer push-push micro SD version.
- Lower power consumption. By replacing linear regulators with switching ones we’ve reduced power consumption by between 0.5W and 1W.
- Better audio. The audio circuit incorporates a dedicated low-noise power supply.
Neater form factor. We’ve aligned the USB connectors with the board edge, moved composite video onto the 3.5mm jack, and added four squarely-placed mounting holes.
No comments:
Post a Comment