.
1. 0,1010 2
0,1010 2 = 1×2 -1 + 0×2 -2 + 1×2 -3 + 0×2 -4 = 0,5 + 0,125 = 0,625 10;
2. 0,924 16
0,924 16 = 9×16 -1 + 2×16 -2 + 4×16 -3 = 9/16 + 2/256 + 4/4096 = = 2340/4096 = 0,5712890625 10 .
:
- ;
- ;
- , , , ;
- , .
0,2315 10 ( 5 )
0,2315
´ 2 = 0 4630
´ 2 = 0 9260
´ 2 = 1 8520
´ 2 = 1 7040
´ 2 = 1 4080
´ 0,2315 10 = 0,00111 2
.
1. 72,41 10
72,41 10 = 72 10 + 0,41 10
72 2
- 72 36 2
0 - 36 18 2
0 - 18 9 2
0 - 8 4 2
1 - 4 2 2
0 - 2 1
72 10 =1001000 2 0
0,41 10 . :
72,41 10 = 1001000,0110100 2.
2. ( : , )
1011,011101 2 = 1011, 01110100 2 = ,74 16 .
B 7 4
, , :
0 + 0 = 0 0 - 0 = 0 0 ´ 0 = 0
1 + 0 = 1 1 - 0 = 1 1 ´ 0 = 0
1 + 0 = 1 1 - 1 = 0 0 ´ 1 = 0
1 + 1 = 10 10 - 1 = 1 1 ´ 1 = 1
, ,
1100100,101 110110,1101
|
|
+ 10011,110- 110001,1010
1111000,011 101,0011
11001001 11011101101 1001
´ 1001 - 1001 11000101
11001001 1001
+ 11001001 - 1001
11100010001 1011
- 1001
1001
- 1001
-
.
.
1. - . . 4- (. 2).
2
927 10 -
927 10 = 100100100111 2-10 .
9 2 7
2. ASCII ( American Standard Code for Information Interchange ). . ASCII 0 127 , , , . 128 255 . , [1].
ASCII ( ASCII , [1, . 14])
8820D2