The device is based on a 2x4 decoder (74LS139) because this decoder shows a configuration that corresponds exactly in its inputs to the combination of signs of the operations of multiplication and division while its outpus give a result to each combination of inputs. Bill of Materials 1 High...
By: braulio777
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from Instructables: exploring - technology http://ift.tt/1y8mhir
By: braulio777
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from Instructables: exploring - technology http://ift.tt/1y8mhir
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