( ) ( ) ( )
S = { s 0, s 1, s 2,..., s M 1 } (1.1-1) M = S (1.1-2) a a, a,..., a,... (1.1-3) 0, 1 2 t p = p s ) (1.1-4) i ( i M 1 pi i= 0 = 1 (1.1-5) M 1 1 H ( S) = p log i (1.1-6) i pi
M 1 i= 0 L = p i l i (1.1-7) η H ( S) η = (1.1-8) L L = M 1 i= 0 P i l i = 2 (1.1-9) M 1 1 H ( S) = P i log 2 = 1. 6477 (1.1-10) i= 0 Pi
2 1 n
Dec Char Dec Char Dec Char Dec Char Dec Char Dec Char Dec Char Dec Char " 66 B b
n 2
2...2 2 2.2 2...2 n 1 3 2 1 1 2 n Zone bit Numerical bit Combination of Zone bit 00 Numerical character 0~9 and SC 01 Letter S ~ Z and SC 10 Letter J ~ R and SC 11 Letter A ~ I and SC Combination of Numerical bit 0000 0 0001 1 0010 2 0011 3 0100 4 0101 5 0110 6 0111 7 1000 8 1001 9
1001 +0100 1101 9 BCD 6 +0110 BCD 0001 0011 =13
Zone bit Numerical bit Combination of Zone bit 0000 Control Unit 1000 Letter a~i 0001 Control Unit 1001 Letter j~r 0010 Control Unit 1010 Letter s~z 0011 Control Unit 1011 Unused 0100 Special Character 1100 Capital letter A~I 0101 Special Character 1101 Capital letter J~R 0110 Special Character 1110 Capital letter S~Z 0111 Special Character 1111 Numerical character 0~9 Combination of Numerical bit 0000 0 0001 1 0010 2 0011 3 0100 4 0101 5 0110 6 0111 7 1000 8 1001 9
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