Question

295.4145D＝（ ）B 1101011.001B＝(

295.4145D＝（ ）B
1101011.001B＝( )D

Answer 1

十进制数转换成二进制时，整数部分除 2 取余，小数部分乘 2 取整。
295÷2 = 147......................1
147÷2 = 73..........................1
73÷2 = 36.............................1
36÷2 = 18..............................0
18÷2 = 9.................................0
9÷2 = 4....................................1
4÷2 = 2.....................................0
2÷2 = 1.....................................0
1÷2 = 0......................................1
0.4145×2=0.829.....................0
0.829×2=1.658........................1
0.658×2=1.316.........................1
0.316×2=0.632.........................0
0.632×2=1.264..........................1
所以 295.4145D ≈ 100100111.01101B（注：取余时倒序）
同理，1101011.001B = 107.125D