Do you know what the most popular display in present days? Bingo, LCD modules are the correct answer! You didn’t believe it? Well, you can easily find the LCD modules, ranging from the simple numerical displays with few single-color digits to gigantic and high-resolution full color computer monitors!

A single-color graphical LCD module is needed in an oscilloscope display for a spectrum analyzer in the medium-resolution. However, the modules in the simple and medium-resolution only have shift registers associated with the columns and rows of the display. In this case, you have to provide a continuous data flow to refresh and multiplex the display content, which is definitely a hassle work to do here!

In other hands, the LCD module with a built-in controller, just as this LCD oscilloscope specialized for spectrum analyzer is much simpler to use. Since it equipped with the refresh and multiplex feature, thus you don’t have to provide the data flow onto the display continuously!

For a better resolution and high performance, you should choose the Samsung KS0107 chip as the clock generator. It able to scan 64 rows and drive multiple KS0180 chips in the same time! Beside that, one or two 7660 chips are included into it to generate the required negative Vee LCD supply of -5V or -10V on-board the LCD module.

Last but not the least; you must apply the LEDs into the project, as they’re used for the backlight. This feature is to allow the module keeps operate from a single +5V supply.