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## Christos 2 years ago binary, 11110111= ?

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1. Christos

it's signed

2. Christos

the result has to be a decimal

3. Kanwar245

in decimal it is 247

4. Christos

it's signed bro

5. shubhamsrg

There are 10 types of people in this world, ones who know binary, others who don;t! ;)

6. Kanwar245

yes sir it is 247

7. goformit100
8. Kanwar245

yup @shubhamsrg since 10 is 2 in decimal

9. Christos

I dont want to convert it, I need to know the steps for it, and im not a "sir" :P

10. shubhamsrg

am glad you got it! -_-

11. goformit100

Yo Yo @shubhamsrg

12. Christos

There are 10 types of people in this world, ones who know binary, others who don;t, rest 8 doesn't exist in this world

13. satellite73

\[1+2+4+16+32+64+128\] i think will do it

14. satellite73

there is a zero in the 8th place

15. Christos

:P But please show me the steps if you can I would be grateful

16. goformit100

I know Binary... Use it's knowledge in Computer @Christos

17. shubhamsrg

In my statement, 10 corresponded to 2 , (in base 2) -_-

18. satellite73

work from the right to the left

19. Christos

That's why rest 8 dont exist :P

20. Christos

ok satellite ill do it

21. modphysnoob

it is negative number

22. modphysnoob

first invert it

23. shubhamsrg

we can talk about 8 if it was base 10 , but when its base 2, talking about 8 is baseless ?

24. satellite73

1s place 2s place 4s place 16s place 32s place 64s place 128s place

25. Christos

Am I forced to invert it @modphysnoob ?

26. Christos

I mean thats the only way?

27. modphysnoob

yes, that's how you figure out negative number

28. ton12

u have to change 11110111 into decimal ryt?

29. ton12

@Christos

30. satellite73

11110111 1 in the ones place 1 in the twos place 1 in the fours place 0 in the eights place 1 in the sixteens place 1 in the thirty twos place 1 in the sixty fours place 1 in the one hundred twenty eights place

31. Christos

thanks modphy I figured it out thanks all for the contributions :D

32. modphysnoob

It is signed , Can't you people read?

33. modphysnoob

invert then add one

34. satellite73

signed by what artist?

35. Christos

lol

36. ton12

11110111 (2) = 1*2^7+1*2^6+1*2^5+1*2^4+0*2^3+1*2^2+1*2^1+1*2^0

37. Christos

:D

38. ton12

Or use Dibble Dobble method....It Will Easier

39. modphysnoob

4 Bit signed number -3 1101 -2 1110 -1 1111 0 1 0001 2 0010 3 0011

40. modphysnoob

11110111 subtract one 11110110 invert 00001001 now use conversion

41. modphysnoob

should give you -9

42. Christos

yes indeed it gave me -9 I already had the solution I just needed the steps to reproduce it with other numbers

43. Christos

=)

44. modphysnoob

it is just subtract one and then invert

45. Christos

or invert and then add one right?

46. modphysnoob

I think they both work , 1111 invert 0000 add one 0001 1111 subtract one 1110 invert 0001

47. Christos

I see

48. modphysnoob

I am assuming you are in computer architecture class ?

49. Christos

Yea that's right :)

50. Christos

if it's a sign positive number I don't need to do that stuff right?

51. modphysnoob

no, singed positive number would have leading number =0

52. Christos

ok

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