Title: 2???(Binary System)
12???(Binary System)
????? ??
- Unjoo Lee
- Hallym University
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- ????(IC) ?? ??? ? ?? ???? ???? ?? ??? ??
4Ch1. Contents
- ??????
- 2??
- ??? ??
- 8??? 16??
- ??
- ???? 2??
- 2?? ??
- 2?? ????? ????
- 2?? ??
- ????
5??? ???(Digital System)
- ??? ??? digit? ??? ??? ??
- ?? ???(binary system)
- 2?? ??? ?? ??(0? 1)
- 0? 1? bit(binary digit)
- ?? ???? ??? ??? ?? ??
- ???, ??? ? DVD(Digital Versatile Disc)
- ??? ???? ??? ??? ??
- ??? ??(module) ?????, ?? ? ????, ?????? ?? ??
??? ??
62??(Binary Number)
- a5a4a3a2a1a0.a-1a-2a-3
- anrnan-1rn-1...a2r2a1ra0a-1r-1a
-2r-2...a-mr-m - 7392 7 103 3 102 9 101 2 100
- (11010.11)2 12412302212102012-11
2-2 - (26.75)10
- 210 1Kilo
- 220 1Mega
- 230 1Giga
- 240 1Tera
r??, a??
72??(Binary Number)
Augend 101101 Minuend 101101 Multiplicand 1011
Addend 100111 Subtrahend -100111 Multiplier 101
sum 1010100 Difference 000110 1011
0000
1011
Product 110111
0 0 0 0 1 1 1 0 1 1 1 10
8??? ??
- ?? 1-2) 10?? 153? 8???
- ?? 1-3) 10?? 0.6875? 2???
153
19 1
2 3
0 2 (231)8
Integer Fraction Coefficient
0.68752 1 0.3750 a-1 1
0.37502 0 0.7500 a-2 0
0.75002 1 0.5000 a-3 1
0.50002 1 0.0000 a-4 1
Answer(0.6875)10 (0.a-1a-2a-3a-4)2 (0.1011)2
98??? 16??
- 8??? ??
- 2?? 3???
- 16??? ??
- 2?? 4???
( 10 110 001 101 011 . 111 100 000 110
)2 (26153.7460)8 2 6
1 5 3 7 4 0 6
( 10 1100 0110 1011 . 1111 0010 )2
(2C6B.F2)16 2 C
6 B F 2
10??(complement)
- N? (r-1)? ?? (rn-1)-N
- r10, r-19, N? ?? 9? ??? (10n-1)-N
- n?? 9?? N? ??
- Ex) 546700? 9? ?? 999999-546700 453299
- Ex) 012398? 9? ?? 999999-012398 987601
- 2??? ??, r2, r-11
- N? ?? 1? ??? (2n-1)-N ? 1? 0??, 0? 1?
- Ex) 1011000 ? 1? ?? 0100111
- Ex) 0101101 ? 1? ?? 1010010
11??(complement)
- n?? ?? ?? ?? N? r? ??
- rn-N (N?0??)
- 0 (N0?? )
- rn-N(rn-1)-N1 gt (r-1)? ??? 1? ?? ?
- Ex) 012398 ? 10? ?? 987602
- Ex) 246700 ? 10? ?? 753300
- Ex) (1101100)2 ? 2? ?? 0010100
- Ex) (0110111)2 ? 2? ?? 1001001
12??(complement)
- 10? ??? ??? 72532-3250 ???
- ?1-6) 10? ??? ??? 3250-72532 ? ??
M 72532
10s complement of N 96750
Sum 169282
Discard end carry 105 -100000
Answer 69282
M N ?? M gt N???
M 03250
10s complement of N 27468
Sum 30718
M N ?? M lt N???
carry? ??, -??? ??? 10? ??? ? -69282
13??(complement)
- ?1-7) X1010100, Y1000011, (a) X-Y, (b) Y-X
X 1010100
2s complement of Y 0111101
Sum 10010001
Discard end carry 27 -10000000
Answer X-Y 0010001
(a) X-Y
Y 1000011
2s complement of X 0101100
Sum 1101111
(b) Y-X
There is no carry. The answer is Y-X -(2s
complement of 1101111)-0010001
14??(complement)
- ?1-7) X1010100, Y1000011, (a) X-Y, (b) Y-X
- 1? ??
X 1010100
1s complement of Y 0111100
Sum 10010000
(??????)End-around carry 1
Answer X-Y 0010001
(a) X-Y
Y 1000011
1s complement of X 0101011
Sum 1101110
(b) Y-X
There is no carry. The answer is Y-X -(1s
complement of 1101110)-0010001
15???? 2??
- ?) ?? 9? 8?? ??? ????(?? ??? ???? 0? ??, 1? ??)
9 00001001 -9 10001001 (?? ?? ??
signed-magnitude representation) 11110110 (????
1? ?? signed-1s-complement representation) 1111
0111 (???? 2? ?? signed-2s-complement
representation)
? 16?? ?? ??
?????????? ???
16???? 2??
- ????
- ??-?? ??? ??? ????? ??
- ??-?? ??? ??? ?? ??? ??? ??? ??
- ????
- (A)-(B) (A)(-B)
- (A)-(-B) (A)(B)
6 00000110 -6 11111010
13 00001101 13 00001101
19 00010011 7 00000111
6 00000110 -6 11111010
-13 11110011 -13 11110011
-7 11111001 -19 11101101
???? 2? ???
??? ??
172?? ?? BCD code
- ? 10??? ?? 4?? 2???
- (185)10 (0001 1000 0101)BCD (10111001)2
- BCD ??
- ?? ?? 1010(??? 10) ???? 0110(??? 6)? ???
4 0100 4 0100 8 1000
5 0101 8 1000 9 1001
9 1001 12 1100 17 10001
0110 0110
10010 10111
1010 1011 1100 1101 1110 1111 ? ??
182?? ?? Other Decimal Codes
- 2421??
- Excess-3 0011? ?
- 2421? excess-3 ?? ?? ??
192?? ?? Gray Code
- ??? ?? ??? 1??? ??
- ????? ????? ??? ???
202?? ?? ASCII Character Code
A1000001 a1100001 00110001
212?? ?? - ????
?? ???(parity) ?? ???(parity)
ASCII A 1000001 01000001 11000001
ASCII T 1010100 11010100 01010100
222?? ????? ????
- ???? 2? ?? ?????, n?? ?? ?? ????? n?? ?? ???
?? ????? ???? - ???? ??(Register Transfer) 2? ??? ????? ??
232?? ??
?? ??(AND,OR,NOT)? ?? ???
x,y? ?? ??
242?? ??
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