digital system (pbl 1)
TRANSCRIPT
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We were given a task to design an
alarm system
We must do in group
“The system use 4 switches.(SW1,SW2.SW3.SW4). The alarm will be trigged if 2 or more switch is closed at the same time. Design the system by using NAND GATE
only.”
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Construct a truth table.
Find the SOP.
Find the equation by
using Karnaugh
Map.
From the equation found, we
can draw the alarm circuit.
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Change the circuit drawing
to Universal Logic gate drawing.
Simplify the circuit.
Make the practical based on the circuit.
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From the K-Map , we got the equation as
below
L1 + L2 + L3 + L4 + L5 + L6
AC+ BC +AC + AB + BD + CD
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A
B
C
D
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A
B
C
D
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A
B
C
D
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At the end of this task, we learn that how to design an alarm system using NAND logic gate.
Furthermore we also learn that logic gate have a relationship between each other.
Finally , we need to learn about logic gate to make an alarm circuit to make it function well.
~(‘.’~)(~’.’)~