who has written Constitution of India?

A committee of seven members has drafted the Constitution. Dr. Rajender prasad the first president of India was the chairman of the committee. The committee has taken 2 years 11 months 18 days to complete the Constitution. It has 395 articles and 12 schedules. Ram Bihari had handwritten this Constitution in 6 months on the paper which was brought from Bharmigham. The nibs were also brought from Bharmigham. Mainly Dr. B. R. Ambedkar has written the draft of Constitution.