Multisim and Ultiboard

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Asynchronous Up and Down Counter

Could anyone help me with this circuit the Asynchronous Up and Down Counter counts downwards to upwards and i was told to add an inverter to make it count from upwards to downwards but dont know where to can anyone help.

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The screenshot

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Hi BobbyFirminios,



I scrolled downwards and upwards but I can't find the screenshot that you mentioned.


Up/Down Counters can have separate upcounting and downcounting clocks or single clock with count direction input. The count direction pin can be named like UP/~DN, DN/~UP,  U/~D, D/~U, etc. The direction of counting can be reversed by inversion of logic state applied to the direction input pin.



Best regards,

G. Goodwin


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