Hi I'm interested in designing a barometer. Am planning to use a Motorola pressure sensor in conjunction with an 8 bit AD converter.(Already done signal processing level shifting, filter, and amplified). I used an instrumentation amplifier for level shifting and amplfication. Filtering just a simple passive capacitor. I am interested in measuring from 50.0 kPa to 100.0 kPa, which the pressure sensor is able to do. So if I have 8 bits digital output from the AD converter, how do I drive 4 seven segment displays. As I'm only interested in 0.5 kPa increments, I was thinking of using the LSB to toggle bettween 0.0 and 0.5 kPa. So I have the remainding 7 bits to control the remainding 3 seven segment displays. Though the MSB doesn't really tell you anything as it is always 0. Using 100.0 kPa = 0000 0000 out of the AD and 50.0 =0110 0100. With decreasing pressure increasing bit count. I was thinking of using an SN5446A BCD driver for the seven segment display, I just was thinking I might get some input on using 7 bits to control 3 seven segment displays.