Wmicro NEW Version Pocket-Sized Digital Storage Oscilloscope ARM DSO Nano DSO201 DSO201 is a pocket size digital storage oscilloscope fulfills basic electronic engineering requirements. It is base on ARMCortex(TM)-M3 compatible 32 bit platform, equipped with 320 x 240 color display, SD card capability, USB connection, and chargeable batteries. Hardware maintenance or software debugging RS232, RS485, I2C, CAN and other communications interface circuits, LED display and keyboard scan driver circuit, brushless motor drive circuit Audio equipment and circuits, electronic toys and remote control model car repair electronic circuits Need to slow signal changes observed for applications (such as: relay and switch contact bounce, the battery charge and discharge curves, power supply load transient response characteristics of the temperature sensor measurements)