二進制化為十進制 1001 1010 = 1*2^7+0*2^6+0*2^5+1*2^4+1*2^3+0*2^2+1*2^1+0*2^0
二進制化為十六進制 0011 1101 1011 = 3db
二進制化為八進制 1010 1100 = 010 101 100 = 254
十進制化為二進制
2^0 = 1,2^1 = 2 ,2^2 = 4,2^3 = 8,2^4 = 16,2^5 = 32,2^6 = 64 ,2^7 = 128,2^8 = 256,2^9 = 512,2^10 = 1024 ;
254 = 128 + 64 + 32 + 16 + 8 +4 +2
= 2^7 + 2^6 + 2^5 + 2^4 + 2^3 +2^2+ 2^1
= 1111 1110
八進制化為二進制 efa9 = 1110 1111 1010 1001
十六進制化為二進制 456 = 100 101 110 = 1 0010 1110
八進制轉化為十進制 123 = 1*8^2 + 2*8^1+3*8^0 = 64+16+3 = 83 ;
十進制轉化為八進制
8^0 = 1,8^1 = 8,8^2 = 64,8^3 = 512 ;
543 = 512 + 24 + 7 = 1*8^3 + 3*8^1 + 7*8^0 = 1037
十進制轉化為十六進制
16^0 = 1,16^1 = 16 ,16^2 = 256,16^3 = 4096 ;
314 = 1*16^2 + 3*16^1 + 10 *16^0 = 13a ;
十六進制轉化為十進制 9a = 9 *16^1 +10*16^0 = 144 + 10 = 154 ;