Hi
I need some help with my course work please.
I have to design and simulate in Multisim a combinational logic circuit using SSI which takes a BCD input and produces the codes to drive a seven segment common anode display.
The final design must be implemented with NAND gates only.
I have done all Karnaugh maps and DeMorgan's Theorem.
The results are:
a=A'B'C'D' * A'B'CD'
b=A'BC *AB'C
c=A'BC'
d=AB'C'D' *A'B'C *ABC
and so on....
My initial deign on the screenshot attached.
The question i have got is how do i connect NAND gates.
If lets say i want to connect a section (a) of the display i need 2 four inputs
and 1 two inputs NAND gates is it correct??
And what next?
To get the first A' do i connect a U7A gate to the GND or to the inverter,
the same about the second A' do i connect U8A to the GND or to the inverter?? And so on..
Any help would be appreciated.
Thanks.
I need some help with my course work please.
I have to design and simulate in Multisim a combinational logic circuit using SSI which takes a BCD input and produces the codes to drive a seven segment common anode display.
The final design must be implemented with NAND gates only.
I have done all Karnaugh maps and DeMorgan's Theorem.
The results are:
a=A'B'C'D' * A'B'CD'
b=A'BC *AB'C
c=A'BC'
d=AB'C'D' *A'B'C *ABC
and so on....
My initial deign on the screenshot attached.
The question i have got is how do i connect NAND gates.
If lets say i want to connect a section (a) of the display i need 2 four inputs
and 1 two inputs NAND gates is it correct??
And what next?
To get the first A' do i connect a U7A gate to the GND or to the inverter,
the same about the second A' do i connect U8A to the GND or to the inverter?? And so on..
Any help would be appreciated.
Thanks.
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