Digital System:
- The term digital refers to the process which is accomplished by using discrete units
- Digital computer is best example of the digital system.
- It basically deal with 2 types of signals in electronics
i) Analog
ii) Digital
Number Systems are of following types
i) Decimal Number system
ii) Binary Number system
iii) Octal Number system
iv) Hexadecimal Number system
Complements
Complements are used in digital computers usually for simplifying the subtraction operation and for the logical manipulation. There are 2 types of complements
i) r´s complement
ii) (r-1)´s complement.
Binary Codes
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Dec Hex Oct Bin
0 0 000 00000000
1 1 001 00000001
2 2 002 00000010
3 3 003 00000011
4 4 004 00000100
5 5 005 00000101
6 6 006 00000110
7 7 007 00000111
8 8 010 00001000
9 9 011 00001001
10 A 012 00001010
11 B 013 00001011
12 C 014 00001100
13 D 015 00001101
14 E 016 00001110
15 F 017 00001111
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Dec Hex Oct Bin
16 10 020 00010000
17 11 021 00010001
18 12 022 00010010
19 13 023 00010011
20 14 024 00010100
21 15 025 00010101
22 16 026 00010110
23 17 027 00010111
24 18 030 00011000
25 19 031 00011001
26 1A 032 00011010
27 1B 033 00011011
28 1C 034 00011100
29 1D 035 00011101
30 1E 036 00011110
31 1F 037 00011111
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