摘要：
Logic gates http://www.ee.surrey.ac.uk/Projects/Labview/gatesfunc/Digital systems are said to be constructed by using logic gates. These gates are the AND, OR, NOT, NAND, NOR, EXOR and EXNOR gates. The basic operations are described below with the aid oftruth tables.AND gateThe AND gate is an electr 阅读全文