Old revisions Add to book Export to PDF Fold/unfold all Book Creator Add this page to your book Book Creator Remove this page from your book Manage book (0 page(s)) Help MSB Most Significant Bit. The bit at the highest position of binary data (the left-most bit) or its content. It is the opposite of the Least Significant Bit (LSB). Technical Information MSB and LSB in Card ID Format See Also LSB (Least Significant Bit)