The request
“Home alarm logic: the door and window contacts are normally closed. If the system is armed and either one opens, sound the siren.”
Then tryAdd a 30-second entry delay inputAdd a panic button that always sounds the siren
What is in this drawing
Read the decisions behind it.
01
Used active-low signals for normally closed magnetic switches
02Logic
alarm = armed AND (door open OR window open)
03
Simplified to combinational logic without latching
When a simple logic diagram of a security system's sensor and arming logic is needed for educational or documentation purposes.
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