Since it is a 12 digit number, there are chances of mistakes in day to day life. However, ISO has introduced the check digit, using which one can identify the correctness of the ISIN number. The check digit helps in identifying the errors in previous 11 bits.
Helen Adams Keller (June 27, 1880 â June 1, 1968) was an American author, political activist, and lecturer.
- Helen Keller. Helen Adams Keller was born June 27, 1880, in the northwest Alabama city of Tuscumbia. Her father was a retired Confederate Army captain and editor of the local newspaper; her mother was an educated young woman from Memphis.