Bit & Number & Math

what int a = 1 is represented in binary and store in memory?

32 bits = 4 Byte --> Storage

8 bit = 1 byte

most sig bit/sign 0000 0000 0000 0000 0000 0000 0000 0001 least significant bit

no unsigned keyword for java

convert to 十进制

1 ＊ 2^0 + 1 * 2^4 = 17

十进制 to binary

17 / 2 = 8 ....1

8 / 2 = 4 ......0