Everything about Sixteen Segment Display totally explained
A
sixteen-segment display, sometimes called a "
Union Jack" display or a "British Flag" display, is a type of display based on 16 segments that can be turned on or off according to the graphic pattern to be produced. 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 only splits the middle one).
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're
still sometimes used on
VCRs,
car stereos,
microwave ovens, telephone
Caller ID displays, and
slot machine readouts.
Sixteen-segment displays may be based on one of several technologies, the three most common
optoelectronics types being
LED,
LCD and
VFD. The LED variant is typically manufactured in single or dual character packages, to be combined as needed into text line displays of a suitable length for the application in question.
As with seven and fourteen-segment displays, a
decimal point and/or
comma may be present as an additional segment, or pair of segments; the comma (used for triple-digit groupings or as a European decimal marker) is commonly formed by combining the decimal point with a closely 'attached' leftwards-descending arc-shaped segment. This way, a point or comma may be displayed between character positions instead of occupying a whole position by itself, which would be the case if employing the bottom middle vertical segment as a point and the bottom left diagonal segment as a comma. Such displays were very common on pinball machines for displaying the score and other information, before the widespread use of dot-matrix display panels.
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