Digital oscilloscope , 4-channel, operating up to 100 MHz with built-in DDS function generator. It offers a sampling rate of 1 GS/s, has an LCD display and a USB port. Also included are four probes, USB cable, power cord and software CD. The DSO-4104C oscilloscope has an extensive trigger section that also allows you to use signals from digital serial buses such as SPI, CAN, I2C and others. The device also has a USB port for connecting to a computer or for writing/reading data from a memory stick.