How do you convert a binary number to denary?

To convert binary to denary, write the place values above each bit. For 8 bits these are 128, 64, 32, 16, 8, 4, 2 and 1. Add the place values that have a 1 below them. For example, 10110101 is 128 + 32 + 16 + 4 + 1 = 181. Eight bits can store values from 0 to 255.