An American boy has made a cheap machine that can help blind people read.

    The blind can read by using Braille-a system of small bumps (隆起物) that the blind touch to read the letters. The machine that makes these small bumps usually costs at least $2,000. It is called Braille typewriter. The American schoolboy, Shu ham Banerjee, made a new Braille typewriter from a Lego tool that lets people create robots. Banerjee has called his new machine the Braigo-a combination(组合) of the words Braille and Lego. It costs just $350. It works by changing electronic texts into Braille and then printing it using a computer or a mobile machine.

    Banerjee designed (设计) his Braigo for a school science project. Since then, he has caught the interest of Silicon Valley in the USA. The big technology company Intel spent money on Banerjee's machine in November, but they did not say how much money they put in. Banerjee also got $ 35,000 from his father to help him start the project. His father works as a computer engineer (工程师) at Intel. He spoke about why he gave so much money to his son, saying, started to be interested more, thinking that he's on to something and this invention has to continue, dream would probably be having most of the blind people use my Braigo.

He was once a big card .

    How would you use a radio or a telephone if you had no electricity or batteries? This1bothered(使烦恼) British inventor Trevor Baylis. He2 a wind-up(装有发条的) radio. It doesn't need electricity or batteries. You wind it up3hand. It plays for about an hour. Then, you wind it up4.

Later, Baylis invented a mobile phone that is by5. The shoes contain (含有) a small battery that is powered when you6This battery is connected to a mobile phone. These two simple inventions can bring modern7to all parts of the world.

    Baylis doesn't have a university degree in engineering. In8, he left high school before graduating(毕业). He just loves9things to help people. He never knows10ideas will come to him. The idea for the phone came to him in a dream.