Click for a bigger pic of the closed switch (677x553, 24 KB)

Click for a bigger pic of the open switch (632x568, 35 KB)

A simple switch by Alcomp to toggle between mouse and joystick (or mouse / mouse or joystick / joystick). Some details:
• ca. 60 cm cable,
• two LEDs for indication of the active port
• toggle switch for selection.
• double sided PCB (dated 25-Sep-89)
• two 74LS157
• two resistors

Thanks to Rainer Schreurs