Question

How many bits must be “flipped” (i.e., changed from 0 to 1 or from 1 to 0) in order to capitalize a lowercase ‘a’ that’s represented in ASCII?

Answer 1

In decimal, the difference between upper case ASCII and lower case ASCII is 32. Change the bit in the "32's" position (bit 6 in an 8-bit sequence). For example, Upper case 'A' is 0x41 (0100 0001) and lower case 'a' is 0x61 (0110 0001) "flip" bit position 6
|________________________________________________ to make An 'A" into a 'a'