A half adder consists of an XOR gate and an AND gate.
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Likewise, a half adder can be used as a " 2 : 2 lossy compressor ", compressing four possible inputs into three possible outputs.
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The bottom level of the tree consists of pairs of 2-bit adders ( 1 half adder and 3 full adders ) plus 2 single-bit multiplexers.
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This application was developed by Greg Snider of Hewlett-Packard and employs crossbar latches to replicate the functions of a half adder, which form the basis of modern computational architectures.
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On paper, the half adder may look like a sprawling super-molecule, but it takes up only 100 square nanometers _ at least a million times smaller than its silicon counterpart.
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Note that the first ( and only the first ) full adder may be replaced by a half adder ( under the assumption that " C " in = 0 ).
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Can i use 555 timer circuit as a half adder circuit ? give its circuit diagram . plz send me at { email redacted } undated comment added 06 : 09, 18 April 2010 ( UTC ).
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As well as common logic gate s such as AND, NOT and XOR, they've drawn up plans for a complex molecular " half adder, " a fundamental computer circuit that takes two binary digits and adds them together.
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