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Gate
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A device that performs a basic opperation on electrical signals, accepting one or more input signals and producing a single output signal.
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Circuit
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A combination of interacting gates designed to accomplish a specific logical function.
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Boolean algebra
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A mathematical notation for expressing two valued logical functions.
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Logic diagram
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A graphical representation of a circuit; each type of gate has its own symbol.
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Truth table
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A table showing all the possible input values.
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Transistor
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A device that acts either as a wire or a resistor, depending on the voltage level of the input signal. Usually made from silicon.
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Semiconductor
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Material such as silicon that is neith a good conductor nor a good insulator.Used in transistors.
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Combinational circuit
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A circuit whose output is solely determined by its input values.
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Sequential circuit or S-R Latch
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A circuit whose output is a function of its input values and the current state of the circuit. Usually store information.
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Circuit equivalance
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The same output for each corresponding input-value combination for two circuits. A(B+C)=AB + BC
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Adder
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An electronic circuit that performs an addition opperation on binary values. 1+1= 10 binary
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Full adder
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A circuit that computes the sum of two bits, taking an input carry bit into account.
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Half adder
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A circuit that computes the sum of two bits and produces the appropriate carry bit. 1+1 sum 0 carry 1
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Multiplexer
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A circuit that uses a few input control signals to determine which of several input data lines is routed to its output.
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Intigrated circuit (chip)
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A piece of silicon on which multiple gates have been embedded.
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