🔶 Aʙᴏᴜᴛ Tʜɪs Vɪᴅᴇᴏ – This video looks at converting between decimal and binary numbers and the binary to decimal using the Casio Classwiz fx-991EX and Base-N mode on this calculator. It is relatively simple to be able to change a decimal number to its equivalent in binary. The Classwiz shows many digits (bits) when giving a binary answer, but we can focus in on the key numbers, by starting with the most significant figure, the first 1.