If you need a cool yellow display to show numbers and particular letters, then this is the LED display for you.

Most LED displays like this are multiplexed - meaning that each digit is lit up in turn.  So each digit is only lit for 1/4 of the time.

This display however, is powered by two seriously high powered TLC5926 LED driver ICs, and although it has an astonishingly easy serial (clk/data) interface, it lights all digits all the time.

If you really want to dim it down you can, by applying PWM to the BLK (blank) pin.  Otherwise don't forget to pull BLK to ground otherwise the display won't light.  The TLC5926 provides a constant current supply to the LEDs and can be powered from 3.3V to 5V all with the same levels of brightness.

This module is pre-built and requires no construction, except for adding breakaway headers or soldering wiring directly to the board.