Question

Binary,


Please explain me how 11101111 = -17
or 11110111 = -9



Answer 1

the MSB if 1 -> -ve number the rest of them, take 2's compliment

Answer 2

-ve number?

Answer 3

so, in 11110111,
the MSB on left is "1"->means the number is a -ve
now, the rest, "1110111" -> take 2's compliment

Answer 4

whats a -ve number

Answer 5

a negative number :)

Answer 6

oh

Answer 7

yes. so, invert the number gives "0001000" and add 1 = "0001001" = 9
and -ve
so, you get -9

Answer 8

same thing about the other?

Answer 9

yep

Answer 10

it gave me 8 :D

Answer 11

ah yes the +1

Answer 12

yes

Answer 13

:DD