A computer \"nibble\" consists of four \"bits,\" each bit being either a 0 or a 1. If characters are represented using a code that uses a nibble for each character, how many different characters can be represented? Solution Since we have 4 places to be filled by either zero or one. So the number of characters representable by a nibble would be = 2*2*2*2 = 2^4 = 16 characters.