LCD frequency meter

11-18 — elektor november 1981 LCD frequency counter c»eu~üffi- professional appearance and performance This is the first in a series of projects featuring a frequency counter module with a liquid crystal display. The high performance is out of all proportion to the simplicity of the circuit. Two switched ranges are available, the first up to 4 MHz for use in monitoring frequencies in microcomputers and the second up to a maximum of 35 MHz to cover CB transceivers and-general use. The complete counter and printed circuit board are housed in a hand held case that has been specifically designed for a module of this type. The nice thing about our hobby is that once in a while an electronic device comes along that just begs to be used Jn.. one way or another, and not just for the original purpose that it was designed for. Just such a device in the neat little package from Thurlby Electronics, the FM77T. This minor miracle is actually a complete frequency counter module that includ...