Multisim: supporting multiple switches

Why can't I support multiple switches off of one power supply?
Randy
Attachments:
Full Adder.ms13 ‏127 KB

Hello,
The digital components you are using have hidden connections to power and ground, however you need to add VCC and GND to the schematic in order to power the digital ICs.
More information about this can be found at:
How Do I Connect Power and Ground to a Digital Component in Multisim?
I made the change to your circuit and it seems to be working now.
Best,
Fernando D.
National Instruments
Attachments:
Full Adder_v2.ms13 ‏118 KB

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