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Squares, rectangles, parallelograms and rhombuses have two parallel sides. The other two are also parallel. A trapezium has only two parallel sides.
Two sides of a quadrilateral can be parallel.
trapezoid
a trapezoid
A trapezium has two parallel sides (of unequal length) and two non-parallel sides.
And gate is similar to the function of two series switches
An AND GATE has two inputs that must both be true for the output to be true. If you have two switches in series then they must both be closed for current to flow. This is analogous to having two true signals on the input of an AND GATE.
no
Two switches in series would be an analogue representation of a solid-state AND logic gate.
It is dependant on whether the switches are in wired in a parallel or series configuration. If the switches are wires in parallel then both switches would have to be off to turn the light bulb off. Either switch could turn the light bulb on. If the switches are wired in series then both switches would have to be on to turn the light bulb on. Either switch could turn the light bulb off.
Parallel circuits normally have more than one resistor. Basically parallel circuits are circuits where the current has more than path to follow. However, there are parallel circuits where there are two switches rather than two resistors.
Yes, you should be able to just replace the switches and get the lamps working again. Go to your local hardware store and they can give advice.
when the two inputs are shorted, a NAND gate acts like a NOT gate. hence AND = NAND + NOT For OR gate, inverse both the inputs before connecting them to a NAND gate. So three NAND gates would be needed.
An AND circuit is a circuit that takes two or more inputs, and generates an output that is the boolean AND function of those inputs. Two light switches in series, for instance, is an AND circuit because both switches have to be on for the light to be on. If the switches were wired in parallel to each other, and then in series with the light, that would be an OR circuit.
Boolean circuits are logic circuits consisting of various "gates" that are arranged to combine two or more bits into a single-bit output. Using the term "false" to represent an input/output that is "off" or a "0"; "true" to represent an input/output that is "on" or a "1"; and A, B, C, etc. as inputs and X as the ouput... AND gate: has two or more inputs that will result in a true output only if all of the inputs are true. If A AND B AND C are true, then X is true. OR gate: has two or more inputs that will result in a true output if any one of the inputs is true. If A OR B OR C is true, then X is true. XOR (eXclusive OR) gate: has two inputs that will result in a true output if and only if one of the two inputs is true. If A AND B are both true or both false, then X is false.If A is true OR B is true, then X is true. NOT gate: inverts the value of a single input. If A is true, then X is false. If A is false, then X is true. Gates called NAND (NOT-AND) and NOR (NOT-OR) have a built-in NOT function for the output. You can build a very simple AND or OR gate using two switches and a bulb. If the switches are wired in series so that both must be on for the bulb to light, that is an AND gate. If the switches are wired in parallel so that either one will light the bulb, that is an OR gate. XOR is somewhat more complex, but can be simulated with two-position switches. NOT would require a relay that lights the bulb when there is no power to its coil. Some info on Boolean logic and circuits: http://en.wikipedia.org/wiki/Boolean_circuits
Before you do that chech all the window switches
What you are talking about is a three way switching system. There are many diagrams for this type of connections on the net. If you install two light switches in parallel both switches would have to be in the off position for the light to go out. Check out the design of a three way switch this is what you need.Before you do any work yourself,on electrical circuits, equipment or appliances,always use a test meter to ensure the circuit is, in fact, de-energizedIF YOU ARE NOT REALLY SURE YOU CAN DO THIS JOBSAFELY AND COMPETENTLYREFER THIS WORK TO QUALIFIED PROFESSIONALS