第二章 Number Systems and Codes：Number Systems and Codes2.1Binary Numbers:Binary Numbers[单选题]The overflow occurs when adding the following 8-bit two’s complement number: 01011101+00110001
2.2Binary Conversion:Binary Conversion
2.3Binary Arithmetic Operations:Binary Arithmetic Operations
2.4Other number systems and Binary Codes:Other number systems and Binary Codes
选项:[错, 对]
[单选题]An addition overflows if the addends’ signs are the same but the sum’s sign is different from the addends’.
选项:[对, 错]
[单选题]For the binary number 10000, the weight of the column with the 1 is ( )
选项:[10, 4
, 8, 16]
[单选题]The number 1100 in BCD is ( )
选项:[equal to decimal ten
, invalid
, equal to decimal twelve
, equal to decimal eight
]
[单选题]In general, we need at most bits to express the product when multiplying an n-bit number by an m-bit number.
选项:[错, 对]
[单选题]An example of an alphanumeric code is ( )
选项:[CRC
, ASCII
, hexadecimal
, BCD
]
[单选题]The fractional binary number 0.11 has a decimal value of ( )
选项:[none of the above
, ¾
, ¼
, ½
]
[单选题]An example of an unweighted code is ( )
选项:[binary
, BCD
, Gray code
, decimal
]
[单选题]The 2’s complement of 1000 is ( )
选项:[1000, 1010, 1001, 0111]
[单选题]The overflow does NOT occur when adding the following 8-bit two’s complement number:10111111+11011111
选项:[错, 对]
