Introduction :  In the beginning, the calculator is the basic idea of computers out, then that arrived at the large computers.  in1980 or late seventies discovered that the computer not only to compute.  in1980 or late seventies discovered that the computer not only to compute..

 came “Sakhr” company and translated the machine and turned it into Arabic, it was very successful.  In 2000 and nineties, they get out small devices all wiring is internal 'inside device'.  In 2006 the Raspberry Pi come out in the technology world.

 Find out the professor ( Eben Upton) in CAMBRIDGE University that the students choose Computer Science to become a programmer and they love that.  but in practice they can not apply what studied it, also that the devices "computers, laptops..” too expensive and the university can’t let their devices to experiences of students.  began the idea of Raspberry Pi, and it has making achieved great success in both educational and practical spheres.

It is small device like card size, it can running computer system, and doing every thing that can do it in computer.It is small device like card size, it can running computer system, and doing every thing that can do it in computer. In very low cost.In very low cost.

What can I do with Raspberry Pi ? You can use Raspberry Pi like any computer traditional. You can use Raspberry Pi like any computer traditional. Such as : 1. surf the Internet. 2. send edit files and documents. 4. electronic control projects. 5. convert any TV you have to a home entertainment system.

Raspberry Pi Models : It have two models : model ( A ) and model ( B )

In July of 2014, they an updated version of the Models : ( Model A+) and (Model B+), in same specifications but for the better. ( Model A+) and (Model B+), in same specifications but for the better. ( Model A+) : Become smaller and has more GPIO. ( Model B+) : Shares the same specs as the Model B, but comes with 4 USB ports, more GPIO, and more RAM.

The Advantages of Raspberry Pi : 1-The microcomputer is useful for small or home based business. 1- The microcomputer is useful for small or home based business. 2- The product does not need from the user to have extensive programming experience. 3- The raspberry pi gives to the users a lot of room to experiment and turn it to something else 3- The raspberry pi gives to the users a lot of room to experiment and turn it to something else.

4- The raspberry pi is perfect for adaptive technology it is able to display image or play video. 5- The small credit card sized products make it easy to recycle and do not pollute the environment.

The Disadvantages of Raspberry Pi : 1- processor is not very fast it is waste of time to download and install software and it is can't do any complex multitasking. 2- Not compatible with other operating systems such as (windows). 3- It is not useful for bigger business that already have a big server.

Initial design considerations Initial design considerations : From 2006 to 2008 they created a lot of designs and models of which we now know as the raspberry pi.

 By 2008, processors that are designed for mobile devices are becoming more affordable.  a feature that would makes the board of junk in kids who did not initially be interested in the purely programming guide device.  Three years later, the raspberry pi model B entered mass production through licensed manufacture deals.

How to download the system of Raspberry Pi ?

Python : Python is programming language created in 1980s.Python is programming language created in 1980s. language used by thousands of people around the world to do things from testing microchips (like; powering Instagram, building video games )language used by thousands of people around the world to do things from testing microchips (like; powering Instagram, building video games )

People chose to use python language for 3 reason ; 1. Readability 2. Libraries 3. Community

To set up your Raspberry Pi you will need: 1- SD Card. 2- Display and connectivity cables. 3- Keyboard and mouse. 4- Power supply 4- Power supply.

USBs.USBs.Ethernet. HDMI cable. Micro-USB power. SD card. Video output. Audio output. GPIO Pins. The Raspberry Pi contains The Raspberry Pi contains :

What are the power requirements ? The device is powered by 5v micro USB, The 1.2A (1200mA) power can run your Raspberry Pi for most applications, but we must use 2.5A (2500mA) if we want to use all 4 USB ports on the Model B+ without using an external powered USB hub supply.

The Model ( B+) use between mA The Model ( B+) use between mA The model ( A ) can use as little as 500mA The model ( A ) can use as little as 500mA The model ( B ) uses between mA The model ( B ) uses between mA

In pins take numbers ( 3, 5, 7, 8, 10, 12, 11, 13, 15, 16, 18, 19, 21, 23, 22, 24, 26 ). In pins take numbers ( 3, 5, 7, 8, 10, 12, 11, 13, 15, 16, 18, 19, 21, 23, 22, 24, 26 ). In pins take numbers ( 1 and 17 ) provide power of 3.3 volts. In pins take numbers ( 1 and 17 ) provide power of 3.3 volts. In pins take numbers ( 2 and 4 ) provide power of 5 volts. In pins take numbers ( 2 and 4 ) provide power of 5 volts.

GPIO capabilities may include : - GPIO pins can be configured to be input or output. - GPIO pins can be enabled disabled. - Input values are readable (typically high = 1, low = 0). - Output values are writable / readable.

The arduino is programmable microcontroller designed to read the data from sensors then send it to computer or raspberry pi. Arduino :

Arduino Vs. Raspberry Pi :

:

- The Beet Box : The idea of this projects is a capacitive touch sensor that connects to a Raspberry Pi, which sends signals to an amp inside a handmade wooden case The idea of this projects is a capacitive touch sensor that connects to a Raspberry Pi, which sends signals to an amp inside a handmade wooden case.

- The Pi Phone; it is synced the Pi to the phone’s dial-pulse system, turning it into a functioning internet phone At the last update. Stuart Johnson took the gutted out the old circuit board, and replaced it with a Raspberry Pi Stuart Johnson took the gutted out the old circuit board, and replaced it with a Raspberry Pi.

- Live Calendar; Instructables user Piney filled the empty space on his wall with a Google Calendar. by Using a spare PC monitor and his Raspberry Pi.