JVCL Help:TJvSegmentedLEDDisplay
JVCL Help: TJvSegmentedLEDDisplay Class
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TJvCustomSegmentedLEDDisplay
TJvSegmentedLEDDisplay
run\JvSegmentedLEDDisplay.pas
Summary
Segmented LED display control.
Pascal
run\JvSegmentedLEDDisplay.pas
TJvSegmentedLEDDisplay = class(TJvCustomSegmentedLEDDisplay);
Description
- JVCLInfo
TJvSegmentedLEDDisplay is a control that mimics a segmented LED display (as used in classic calculators, VCR displays, car radio displays, etc.). A segmented LED display allows to display numbers, characters and/or symbols. It does so by controlling a number of individual leds. Each LED is covered by a glass bar or dot to give it a proper orientation and layout. Each such LED is called a segment (hence the name 'segmented LED display'). The control simulates this by rendering the bars and dots. It allows to use any color for the segments and allows to render both lit and unlit segments in two different colors (conventional LED displays often show unlit segments due to either a backlight is being used (as sometimes used with LCD displays) or because a neighboring segment is lit and the optical separation is not good enough). The unlit segments are generally the same color as the lit segment but a lot darker. The control allows to use any layout by specifying a digit class. Each digit class can provide it's own layout and number of segments as well as specifying how to map characters to these segments.
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