0100 1001 1110 1101
0011 1011 0111 1111
1111 1011 0111 1001
0010 0100 0000 1010
100
101
110
1111
AB
A + B
A ⊕ B
None of these
It is a 8-4-2-1 weighted code
(1234567)10 needs 4 bytes in BCD representation
Conversion to and from the decimal system can be done easily
All of these
-127 to + 128
-127 to + 127
-128 to + 128
-128 to +127