10강. 값의 진법 변환

2진법

00000001 -> 1

00000010 -> 2

00000100 -> 4

00001000 -> 8

00010000 -> 16

00100000 -> 32

01000000 -> 64

10000000 -> 128

 

2진법 -> 10진법 변환

00000011 -> 1 + 2 -> 3

00001001 -> 8 + 1 -> 9

00100110 -> 32 + 4 + 2 -> 38

00111111 -> 32 + 16 + 8 + 4 + 2 + 1 -> 63

 

10진법 -> 2진법 변환

10 -> 8, 2 -> 00001010

7 -> 4, 2, 1 -> 00000111

38 -> 32, 4 -> 00100100

16진법 (0 ~ 9, A_10, B_11, C_12, D_13, E_14, F_15)

00001010 -> 0 + 10 -> 0x0A(대소문자 구별 없음)