It 18 Palm Job _java Foundation second day _ binary conversion principle and complement storage method

1. What is the representation of negative numbers and why is it so designed?

For:

Negative numbers are expressed in the complement form of the original code.

The positive and negative numbers add up to 0, overflow the highest bit, exactly equal to 0.

How is 2.-128 stored in memory? Extrapolation process

For:

-the result of the 1282 binary is 10000000 (according to the 8-bit calculation), as in the original code.

3. If the byte is represented as 11111111, what is its true data?

For:

11111111 of the original code is 0000 0001, so 11111111 of the real data is-1.

4. Do positive and negative numbers support the complement approach?

For:

All support

5. Is the positive number minus one negation?

For:

Is.

It 18 Palm Job _java Foundation second day _ binary conversion principle and complement storage method