I am using a LM2917 to sense input frequency, and give me a corresponding output voltage. Currently, it is working quite well and giving me an extremely linear output. Now I need to display this in a digital readout. I have an ICL7107 (3 + 1/2) chip. Basically, my problem is thus: how do I configure it such that the lowest necessary reading is 1000RPMs (this corresponds to a voltage of 4.14mV) and the highest necessary reading is 6000RPMs (this corresponds to a voltage of 6.29mV)? So far, we were thinking of implementing it by having the readout be 10s of RPMs, such that a display of 0600 => 6000RPMs and a display of 1600 => 16000RPMs. Any advice would be greatly appreciated.