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Learning by Doing: CISCO Certified Network ... - SCN Research

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For example, lets convert the binary octet 11001101 to hexadecimal.<br />

1. We just divide the octet into two groups of 4 bits<br />

1 1 0 0 1 1 0 1<br />

1 1 0 0 1 1 0 1<br />

2. Make new column headings<br />

3. Add them up.<br />

8 4 2 1 8 4 2 1<br />

1 1 0 0 1 1 0 1<br />

8 4 2 1 8 4 2 1<br />

1 1 0 0 1 1 0 1<br />

8+4=12 8+4+1=13<br />

4. Then, with those totals, we use our decimal to hexadecimal conversion chart<br />

above to complete the conversion.<br />

12=C 13=D<br />

The binary octet “11001101” is equivalent to the hexadecimal number “CD.”<br />

Let’s do another one: convert 10010111 from binary to hexadecimal.<br />

1. We just divide the octet into two groups of 4 bits<br />

1 0 0 1 0 1 1 1<br />

1 0 0 1 0 1 1 1<br />

2. Make new column headings<br />

3. Add them up.<br />

8 4 2 1 8 4 2 1<br />

1 0 0 1 0 1 1 1<br />

8 4 2 1 8 4 2 1<br />

1 0 0 1 0 1 1 1<br />

8+1=9 4+2+1=7<br />

60

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