Nop, Actually this is the circuit logic I want to implement for a bulb in my room. I want two switches for it. One switch outside the room and another one inside the room. Now what I want to be able is "When the switch outside is ON, the bulb must be ON regardless of inside switch. And the bulb should be off if the switch inside is OFF regardless of outsides switch.Welcome to AAC!
Is this schoolwork?
But with logical OR, when A = 1 in 2nd row, the output is 1 but required output is 0It is just a logical OR
And a logical OR gives you that functionality, unless you can tell me a reason that won't work.Nop, Actually this is the circuit logic I want to implement for a bulb in my room. I want two switches for it. One switch outside the room and another one inside the room. Now what I want to be able is "When the switch outside is ON, the bulb must be ON regardless of inside switch. And the bulb should be off if the switch inside is OFF regardless of outsides switch.
That truth table can’t be correct.
A B Required Output 1 X(don't care) 1 X(don't care) 0 0
You cannot have both of the don't cares simultaneously.But with logical OR, when A = 1 in 2nd row, the output is 1 but required output is 0
The problem with logical OR is when the switch outside is ON and switch inside is OFF, the bulb glows, but I want the bulb to be OFF in this caseAnd a logical OR gives you that functionality, unless you can tell me a reason that won't work.
Your truth table is incomplete. With 2 variables, you have 4 possible combinations; and don't cares aren't valid for inputs.Nop,
Thanks for pointing the mistake. I'd be grateful if there was any way I could implement the circuit I wanted.That truth table can’t be correct.
Let’s say A = 1. Then the first row says the result should be 1 always, since the we don’t care about the value of B. But wait, if the value of B is zero, the result should be 0. Hence, we really do care about the value of B. But the first row says we don’t care…
The same argument (circular argument) can be made when B = 0…
So the truth table is wrong.
You haven't given us sufficient information. Give us the output for all 4 input combinations.Thanks for pointing the mistake. I'd be grateful if there was any way I could implement the circuit I wanted.
If this circuit is somehow not possible, what would the corrected one be like for my requirement ?
These requirements are in conflict. If the light should be on when the outside switch is on, regardless of the position of the inside switch, how can the inside switch affect the outside switch when the outside switch is on?"When the switch outside is ON, the bulb must be ON regardless of inside switch. And the bulb should be off if the switch inside is OFF regardless of outsides switch.
I tried but could not find another truth table that fulfills my requirement. Maybe I was trying something impossible. Sorry for asking stupid question.You haven't given us sufficient information. Give us the output for all 4 input combinations.
These requirements are in conflict. If the light should be on when the outside switch is on, regardless of the position of the inside switch, how can the inside switch affect the outside switch when the outside switch is on?
Could you tell me how this idea can be implemented using switch/circuits.I'd likely want the light status (on/off) to follow the *last* switch change, whichever that was.
As a start it takes memory of:Could you tell me how this idea can be implemented using switch/circuits.
Completely contradictory specifications.Nop, Actually this is the circuit logic I want to implement for a bulb in my room. I want two switches for it. One switch outside the room and another one inside the room. Now what I want to be able is "When the switch outside is ON, the bulb must be ON regardless of inside switch. And the bulb should be off if the switch inside is OFF regardless of outsides switch.
But you said very explicitly that if the outside switch is ON that the bulb must be ON regardless of the inside switch.The problem with logical OR is when the switch outside is ON and switch inside is OFF, the bulb glows, but I want the bulb to be OFF in this case
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