It is Binary code. Computers are electronic machines that process information in digital format. Instead of understanding words and numbers, as people do, they change those words and numbers into strings of zeros and ones called binary code. Inside a computer, a single letter "A" is stored as seven binary numbers: 1000001. In fact, all the basic characters on your keyboard (the letters A-Z in upper and lower case, the numbers 0-9, and the symbols) can be represented with different combinations of just eight binary numbers. A question mark is stored as 111111, a number 7 as 110111, and a left bracket ([) as 1011011. Virtually all computers know how to represent information with this "code", because it's an agreed, worldwide standard. It's called ASCII (American Standard Code for Information Interchange).
01000010 01101001 01101110 01100001 01110010 01111001
When Converter into ASCII
B i n a r y