8
. 2- .
a*b (2), a = D2(16), b = 74(8)
:
a = 13*16 + 2*1 = 208(10)
b = 7*8 + 4 = 60(10)
a*b = 208*60 = 12480(10) = 11000011000000(2)
: 12480 2
12480 6240 2
0 6240 3120 2
0 3120 1560 2
0 1560 780 2
0 780 390 2
0 390 195 2
0 194 97
: 11000011000000(2)
9
a = 000110010010(2-10)
:
a - . 4 (4 ) :
000110010010(2-10) = 0001 (2) 1001 (2) 0010 (2) = 1 1*23 + 1*1 1*2 = 1 9 2
, a = 192(10).
: 192(10).
10
, a = 327(10) .
:
a :
327(10) = 101000111(2)
- 0000000101000111
0000000101000111
0000000101000111. , a (327>0).
: - 0000000101000111
0000000101000111
0000000101000111.
11
1001101111111001(2)
:
,
1001101111111000(2)
1110010000000111(2)
:
1010010000000111(2) = 1*215 + 1*214 + 1*213 + 1*210 + 1*22 + 1*2 + 1 = 32768 + 16384 + 8192 + 1024 + 4 + 2 + 1 = 58375(10)
: 58375(10).
12
-802,15625(10) .
:
:
| (S) | (E) | (M) |
| 30..23 | 22..0 | |
| 1 | 8 | 23 |
8 (28=256 (256 - 2 / 2 = 127) 2-127 2127, 127(10) = 1111111(2)).
:
-802.15625 = 1100100010,0001.
:
1100100010,0001 = 1,1001000100001 * 28,
:
8 + 127 = 135 = 10000111(2)
:
| 30..23 | 22..0 |
: 11000011110010001000010000000(2)
13
UNICODE . : , .
|
|
|
:
, , 84 .
, :
V = 84*2 = 168 .
: 168 .
14
UNICODE. 8- -8. 2 . ?
:
K . UNICODE, 16- , 16*K. -8 ( 8- ) 8*K.
dV = 2 = 16384 .
:
16*K = 8*K + 16384
8*K = 16384
K = 2048
, K = 2048 .
: 2048.
15
( ), 8 32 , , 256 . .
K = 8*32 = 256
256 = 28
8
V = 256*8 = 2048 = 256
: 256 .
16
:
AB + (A (A B))
:
| A | B | AB | A B | A (A B) | + |
17
(A B) + (A BC), A, B, C , , . , . .
(A B) + (ABC ABC)
| A | B | C | A B | BC | A BC | (A B) + (A BC) |
| A | B | C | A B | ABC | ABC | ||
18
|
|
|
, (), () (), , . , , : : , 养 : , ! : , . , , , , . ?
:
:
1. , , ;
2. , , ;
3. , , ;
4. , , ;
5. , , ;
6. , , .
, .
: .
