That sounds like a question from pc programmer.
From point view of hardware, every digital data is stored in the form of 0 or 1 in bit.
1 byte = 8 bit
1 word = 16 bit
1 long = 32 bit
1 phrase =..hm.. many 8 bits. haha...
main()
{
char Str[] = {"Hello!"};
//you can now access the binairy values of the word "Hello!" through
//trough the members of Str. So Str[0] is the value of H, Str[1] is value
of e...
}