LEDBar. A versatile numeric display

The LED control is just a single component that can be used in many ways. The LEDBar aggregates a number of LEDControl objects to make a display that can show any numeric information. The character displays can handle decimal and hexadecimal values so the LEDBar can show decimal integer, floating-point, hexadecimal, octal and binary values easily. This is ideal for many instrumentation projects.

The LEDBar can have almost any number of digits. The practical limits are obvious of course but 4, 8 10 or even 50 digits are usable. The bar automatically lays out the digits in much the same way as the LEDClock control by arranging them left-to-right across the width of the control.

The bar uses a similar method to the LEDClock to format the data. A numeric string is formatted with a particular format specification and the characters in the string used to update the individual LEDControl objects in the bar. In this manner the following formats are supported:

• Decimal Integer.

• Fixed Point.

• Floating Point.

• Hexadecimal.

• Octal.

• Binary.

The LEDBar has a property for the number of digits and each time this is changed the LEDControls are removed and the bar is repopulated with new ones.

The full listing for the LEDBar is shown here and a test harness that shows off the capabilities of the controls shown in this article is included in the code page.

A selection of LED displays.
 

You can find the Source Code files here.

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