### binary

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binary 二进制的

"dual," mid-15c., from Late Latin binarius "consisting of two," from bini "twofold, two apiece, two-by-two" (used especially of matched things), from bis "double" (see bis-). Binary code in computer terminology was in use by 1952, though the idea itself is ancient. Binary star in astronomy is from 1802.
1. The machine does the calculations in binary.

2. the binary system

3. Using binary notation is in fact just manipulating ones and noughts.

4. Computers operate using binary numbers.

5. The instructions are translated into binary code, a form that computers can easily handle.