将十进制数22转换为二进制数,可以使用以下两种方法:
方法一:除二取余法
1. 用22除以2,记录商和余数:
- 22 ÷ 2 = 11 余 0
- 11 ÷ 2 = 5 余 1
- 5 ÷ 2 = 2 余 1
- 2 ÷ 2 = 1 余 0
- 1 ÷ 2 = 0 余 1
2. 将余数倒序排列:
- 余数序列为:0, 1, 1, 0, 1
- 倒序后为:10110
3. 最终结果:22(十进制) = 10110(二进制)
方法二:位权展开法
1. 将22表示为二进制数的形式:
- 2² = 4,4 ≤ 22,记录1
- 2¹ = 2,2 ≤ (22 - 4),记录1
- 2⁰ = 1,1 ≤ (22 - 6),记录1
- 2⁻¹ = 0.5,0.5 ≤ (22 - 7),记录1
- 2⁻2 = 0.25,0.25 ≤ (22 - 7.5),记录1
- 2⁻3 = 0.125,0.125 ≤ (7.5 - 0.5),记录1
- 2⁻4 = 0.0625,0.0625 ≤ (7 - 0.625),记录1
- 2⁻5 = 0.03125,0.03125 ≤ (6.375 - 0.125),记录1
- 2⁻6 = 0.015625,0.015625 ≤ (6.125 - 0.0625),记录1
- 2⁻7 = 0.0078125,0.0078125 ≤ (6.0625 - 0.015625),记录1
- 2⁻8 = 0.00390625,0.00390625 ≤ (6.046875 - 0.0078125),记录1
- 2⁻9 = 0.001953125,0.001953125 ≤ (6.0449375 - 0.00390625),记录1
- 2⁻10 = 0.0009765625,0.0009765625 ≤ (6.0440625 - 0.001953125),记录1
- 2⁻11 = 0.00048828125,0.00048828125 ≤ (6.043984375 - 0.0009765625),记录1
- 2⁻12 = 0.000244140625,0.000244140625 ≤ (6.043978125 - 0.00048828125),记录1
- 2⁻13 = 0.0001220703125,0.0001220703125 ≤ (6.04397304375 - 0.000244140625),记录1
- 2⁻14 = 0.00006103515625,0.00006103515625 ≤ (6.04396899859375 - 0.00012207031