1.十进制:
(1)熟记2^0`~2^10的结果
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
(2)十进制逢十进一,高位加一,低位变0
758 = 7.58*10^2
备注:十进制的权是10,其指数是该数的位数减一(n-1)
2.二进制:十进制逢十进一,高位加一,低位变0
(1)把十进制的758转换成二进制
758=1*2^9+1*2^7+1*2^6+1*2^5+1*2^4+1*2^2+1*2^1+0*2^0
=1*2^9+0*2^8+1*2^7+1*2^6+1*2^5+1*2^4+0*2^3+1*2^2+1*2^1+0*2^0
=0b1011110110(二进制)
3.八进制:八进制逢八进一,高位加一,低位变0
把十进制的758转换成八进制
758=1*2^9+1*2^7+1*2^6+1*2^5+1*2^4+1*2^2+1*2^1+0*2^0
=1*2^9+0*2^8+1*2^7+1*2^6+1*2^5+1*2^4+0*2^3+1*2^2+1*2^1+0*2^0
=1 011 110 110
=0o1366(八进制)
4.十六进制:十六进制逢十六进一,高位加一,低位变0
(1)把十进制的758转换成十六进制
758=1*2^9+1*2^7+1*2^6+1*2^5+1*2^4+1*2^2+1*2^1+0*2^0
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