An oscilloscope is a fundamental device in electrical engineering. With an oscilloscope we can view the electrical signal in real time to help us find possible glitches
in the electrical circuit.
This dissertation starts off with a presentation of what an oscilloscope is. The
basic terminology of oscilloscopes is introduced in this part along with an explanation of how an oscilloscope works.
In the second part we create a simple digital oscilloscope, which can capture the
signal and display it to the screen of a PC. For this purpose, we use a development
board STM32F4-Discovery, which can be acquired at a reasonable price. We use
it to detect a digital event on the signal and then capture it. Captured samples
are transferred to a PC using USB protocol and are displayed to the screen. We
test our digital oscilloscope by capturing PWM and RS232 signals.
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