Various Type Of Segmented Displays-Must Know That They Too Exists..

Seven-segment display (SSD):
A seven-segment display (SSD), or seven-segment indicator, is a electronic display device for displaying decimal numerals. Seven-segment displays are widely used in digital clocks, electronic meters, and other electronic devices for displaying numerical information. 
Visit the below Link For More Info:
http://www.dilabs.co.in/2013/03/seven-segment-display-all-you-need-to.html
 
SSD, Front
SSD, Front

SSD, Back
SSD, Back

Vane display:

 A vane display is a type of 7-segment display. Unlike LED segmented displays, vane displays are composed of seven physical surfaces, typically painted white, but occasionally other colors, such as yellow or fluorescent green. If a segment is to be displayed as "off", it will be rotated so that its edge faces forward, with the painted surface pointing away and not visible. A segment that is to be displayed as "on" will be rotated so that the painted surface is shown.

Vane Display
Vane Display
Vane Display
Vane Display

 

Nine-segment display:

 A nine-segment display is a type of display based on 9 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, having an additional two diagonal or vertical segments between the top, middle, and bottom horizontal segments. This provides a minimal method of displaying alphanumeric characters. Basically developed for Russian Scientific Calculator.

Nine Segment Display Patterns
Nine Segment Display Patterns

 
Possible Shapes Of Numbers In A NSD
Possible Shapes Of Numbers In A NSD

Fourteen-segment display:

A fourteen-segment display is a type of display based on 14 segments that can be turned on or off to produce letters and numerals. It is an expansion of the seven-segment display, having an additional four diagonal and two vertical segments with the middle horizontal segment broken in half. A seven-segment display suffices for numerals and certain letters, but unambiguously rendering the ISO basic Latin alphabet requires more detail. A slight variation is the sixteen-segment display which allows additional legibility in displaying letters or other symbols.

Fourteen Segment Display
Fourteen Segment Display

 
Fourteen Segment Display, In Use
Fourteen Segment Display, In Use

Nixie tube:

A Nixie tube is an electronic device for displaying numerals or other information using glow discharge.
The glass tube contains a wire-mesh anode and multiple cathodes, shaped like numerals or other symbols. Applying power to one cathode surrounds it with an orange glow discharge. The tube is filled with a gas at low pressure, usually mostly neon and often a little mercury or argon, in a Penning mixture.
Nixie Tube In Action
Nixie Tube In Action

Nixie Tube
Nixie Tube


A Nixie Clock

Sixteen-segment display:

A sixteen-segment 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 splits only the middle horizontal segment). Sixteen-segment displays were originally designed to display alphanumeric character.

Sixteen Segment Display
Sixteen Segment Display

 
Sixteen Segment Display IC
Sixteen Segment Display IC

Sixteen Segment Display, With Segment Code
Sixteen Segment Display, With Segment Code
Possible Patterns, 16 Segment Display
Possible Patterns, 16 Segment Display
image courtesy: wikipedia.org