An oscilloscope is a complex electronic laboratory instrument commonly used to capture, process, display and analyse the waveform and bandwidth of electronic signals. The device draws a graph of the instantaneous signal voltage as a function of time. Digital oscilloscopes are often referred to as digital storage oscilloscope (DSO). They’re used for a multitude of applications, most commonly to test new electrical equipment. They can display both alternating current AC and pulsating direct current DC wave forms from as low as 1Hz to several MHz. The display of an oscilloscope is segmented into horizontal divisions and vertical divisions. The time is displayed along the horizontal section, and it displays the voltage on the vertical section.