A sixteen-segment display, sometimes called a ‘Union Jack’ display (because it resembles the British Flag), is a type of display based on 16 segments. It is an extension of the more common seven-segment display, adding four diagonal and two vertical segments and splitting the three horizontal segments in half (A fourteen-segment display splits only the middle horizontal segment). A sixteen-segment display can have 65,536 different states; they were were originally designed to display alphanumeric characters (Latin letters and Arabic digits).
Later they were used to display Thai numerals and Persian characters. Before the advent of inexpensive dot-matrix displays, sixteen and fourteen-segment displays were some of the few options available for producing alphanumeric characters on calculators and other embedded systems. However, they are still sometimes used on VCRs, car stereos, microwave ovens, telephone Caller ID displays, and slot machine readouts.