Jon sent in this nice oscilloscope clock that uses a four-tube oscilloscope with PIC and DAC for clock vectors – Link.

Related:

 Scope-500
Oscilloscope clock – Link.

 140646127 97Df0092Eb B
Oscilloscope alarm clock project… – Link.

 Oclock-04-20-07-1
$35 AVR Oscilloscope clock kit – Link.

 Img 1600-1
 Img 1603-1
AVR Oscilloscope clock – Link.