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

1011 0001

1101 0011

1011 0011

1001 1111

0.0011

0.0101

0.011

0.111