Hi In my project iam measuring the leak rate. The range of leak rate is 1.0E-11 to 1.0E-02.Up now I measured leak rate and displayed On the 7 segment display with 0.1 resolution. Here I used look up table method I taken hole Range values In the table and iam displaying the value for corresponding voltage . I stored values in the farm Of (1011 =1.0E-11) here "." ,"E","-" are constants. Now I want display the leak rate on BAR graph display. For 20 digits I have to take one led. The fallowing values I have to show on bar graph 1E-11, 3E-11, 5E-11, 7E-11, 9E-11, 1E-10, 3E-10, 5E-10…………………………………………2E-02 ex: 1E-11 = one led should glow 3E-11 = 2 leds should glow 5E-11 = 3 leds should glow : : : How to convert table values in to bar graph display. Thanks Regards