Printed Circuit Board (PCB) from Digitizer Summagraphics SummaSketch Not Tested

Digital Unibus Interrupt Control Circuit Board Pcb M7821 B

DIGITAL EQUIPMENT Circuit Board C-100-9 Used #55610

DIGITAL EQUIPMENT Circuit Board C-100-9 Used #55624

DIGITAL EQUIPMENT Circuit Board C-100-9 Used #55612

DIGITAL EQUIPMENT Circuit Board C-100-10 Used #55630

DIGITAL EQUIPMENT Circuit Board C-100-9 Used #55609

DIGITAL EQUIPMENT Circuit Board C-100-9 Used #55623