What are the required steps to convert base 10 integer
number 110 000 110 101 010 224 to signed binary code (in base 2)?
- A signed integer, written in base ten, or a decimal system number, is a number written using the digits 0 through 9 and the sign, which can be positive (+) or negative (-). If positive, the sign is usually not written. A number written in base two, or binary, is a number written using only the digits 0 and 1.
1. Divide the number repeatedly by 2:
Keep track of each remainder.
Stop when you get a quotient that is equal to zero.
- division = quotient + remainder;
- 110 000 110 101 010 224 ÷ 2 = 55 000 055 050 505 112 + 0;
- 55 000 055 050 505 112 ÷ 2 = 27 500 027 525 252 556 + 0;
- 27 500 027 525 252 556 ÷ 2 = 13 750 013 762 626 278 + 0;
- 13 750 013 762 626 278 ÷ 2 = 6 875 006 881 313 139 + 0;
- 6 875 006 881 313 139 ÷ 2 = 3 437 503 440 656 569 + 1;
- 3 437 503 440 656 569 ÷ 2 = 1 718 751 720 328 284 + 1;
- 1 718 751 720 328 284 ÷ 2 = 859 375 860 164 142 + 0;
- 859 375 860 164 142 ÷ 2 = 429 687 930 082 071 + 0;
- 429 687 930 082 071 ÷ 2 = 214 843 965 041 035 + 1;
- 214 843 965 041 035 ÷ 2 = 107 421 982 520 517 + 1;
- 107 421 982 520 517 ÷ 2 = 53 710 991 260 258 + 1;
- 53 710 991 260 258 ÷ 2 = 26 855 495 630 129 + 0;
- 26 855 495 630 129 ÷ 2 = 13 427 747 815 064 + 1;
- 13 427 747 815 064 ÷ 2 = 6 713 873 907 532 + 0;
- 6 713 873 907 532 ÷ 2 = 3 356 936 953 766 + 0;
- 3 356 936 953 766 ÷ 2 = 1 678 468 476 883 + 0;
- 1 678 468 476 883 ÷ 2 = 839 234 238 441 + 1;
- 839 234 238 441 ÷ 2 = 419 617 119 220 + 1;
- 419 617 119 220 ÷ 2 = 209 808 559 610 + 0;
- 209 808 559 610 ÷ 2 = 104 904 279 805 + 0;
- 104 904 279 805 ÷ 2 = 52 452 139 902 + 1;
- 52 452 139 902 ÷ 2 = 26 226 069 951 + 0;
- 26 226 069 951 ÷ 2 = 13 113 034 975 + 1;
- 13 113 034 975 ÷ 2 = 6 556 517 487 + 1;
- 6 556 517 487 ÷ 2 = 3 278 258 743 + 1;
- 3 278 258 743 ÷ 2 = 1 639 129 371 + 1;
- 1 639 129 371 ÷ 2 = 819 564 685 + 1;
- 819 564 685 ÷ 2 = 409 782 342 + 1;
- 409 782 342 ÷ 2 = 204 891 171 + 0;
- 204 891 171 ÷ 2 = 102 445 585 + 1;
- 102 445 585 ÷ 2 = 51 222 792 + 1;
- 51 222 792 ÷ 2 = 25 611 396 + 0;
- 25 611 396 ÷ 2 = 12 805 698 + 0;
- 12 805 698 ÷ 2 = 6 402 849 + 0;
- 6 402 849 ÷ 2 = 3 201 424 + 1;
- 3 201 424 ÷ 2 = 1 600 712 + 0;
- 1 600 712 ÷ 2 = 800 356 + 0;
- 800 356 ÷ 2 = 400 178 + 0;
- 400 178 ÷ 2 = 200 089 + 0;
- 200 089 ÷ 2 = 100 044 + 1;
- 100 044 ÷ 2 = 50 022 + 0;
- 50 022 ÷ 2 = 25 011 + 0;
- 25 011 ÷ 2 = 12 505 + 1;
- 12 505 ÷ 2 = 6 252 + 1;
- 6 252 ÷ 2 = 3 126 + 0;
- 3 126 ÷ 2 = 1 563 + 0;
- 1 563 ÷ 2 = 781 + 1;
- 781 ÷ 2 = 390 + 1;
- 390 ÷ 2 = 195 + 0;
- 195 ÷ 2 = 97 + 1;
- 97 ÷ 2 = 48 + 1;
- 48 ÷ 2 = 24 + 0;
- 24 ÷ 2 = 12 + 0;
- 12 ÷ 2 = 6 + 0;
- 6 ÷ 2 = 3 + 0;
- 3 ÷ 2 = 1 + 1;
- 1 ÷ 2 = 0 + 1;
2. Construct the base 2 representation of the positive number:
Take all the remainders starting from the bottom of the list constructed above.
110 000 110 101 010 224(10) = 1 1000 0110 1100 1100 1000 0100 0110 1111 1101 0011 0001 0111 0011 0000(2)
3. Determine the signed binary number bit length:
The base 2 number's actual length, in bits: 57.
- A signed binary's bit length must be equal to a power of 2, as of:
- 21 = 2; 22 = 4; 23 = 8; 24 = 16; 25 = 32; 26 = 64; ...
- The first bit (the leftmost) is reserved for the sign:
- 0 = positive integer number, 1 = negative integer number
The least number that is:
1) a power of 2
2) and is larger than the actual length, 57,
3) so that the first bit (leftmost) could be zero
(we deal with a positive number at this moment)
=== is: 64.
4. Get the positive binary computer representation on 64 bits (8 Bytes):
If needed, add extra 0s in front (to the left) of the base 2 number, up to the required length, 64:
110 000 110 101 010 224(10) Base 10 integer number converted and written as a signed binary code (in base 2):
110 000 110 101 010 224(10) = 0000 0001 1000 0110 1100 1100 1000 0100 0110 1111 1101 0011 0001 0111 0011 0000
Spaces were used to group digits: for binary, by 4, for decimal, by 3.