A story is told calling attention to the angels on bicycles that reside on the back of U. S. Playing Card Rider Back cards.
The K8031 is a digital storage oscilloscope using a computer and its monitor to display waveforms. All standard oscilloscope functions are available in the Windows program supplied. Its operation is just like a normal oscilloscope. Connection is through the computer//s parallel port the scope is completely optically isolated from the computer port.