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用二进制加法器对二—十进制编码的十进制数求和,当和的本位十进制数二—十进制编码小于等于1001且向高位无进位时,(12);当和小于等于1001且向高位有进位时,(13);当和大于1001时,(14)。

  • A.不需进行修正
  • B.需进行加6修正
  • C.需进行减6修
  • D.进行加6或减6修正,需进一步判别
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