This kit uses ARM Cortex-M3 processor (STM32F103C8), and includes a 2.4-inch color TFT display screen, can be used as ARM test development board.Can freeze at any time waveform display (HOLD function).Comes 1Hz /3.3V square wave test signal source. With automatic, regular and one-shot modes, easy to capture the moment waveform.Available rising or falling edge trigger.Observable previous trigger waveform (negative delay). With waveform parameter digital display, including frequency, period, pulse width, duty ratio, MAX./MIN./AVG./Peak-Peak/virtual values.Waveform storage function: will not lose the waveform after power off. Partially open-sourced,the MCU has been programmed. Adjustable vertical displacement,and with instructions,which increase the likelihood of adding different features or developing new applications on the hardware for users.