Siqura PD900 Series, User Manual

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C h a p t e r 4
Appendix B: Addresses from decimal to
binary
Follow the example below to convert IP addresses to binary numbers. Use the calculator on your computer (Start> All
Programs> Accessories> Calculator) for conversion.

For Windows XP and Windows Vista, click View on the calculator and click Scientific .

For Windows 7 or above, click View on the calculator and click Programmer .
Then follow the steps in the following example to convert the IP addresses.
The example below shows how to convert 192.168.2.81 to binary numbers.
1
On the left of the calculator, select Dec . Then enter the first decimal number of the IP address, “192”. Select Bin
and the number will be converted to a binary number. Repeat the same procedure for the rest of the decimal
numbers. Remember to select
Dec before entering the next decimal number. If you don’t, a decimal number
cannot be entered. The table below shows the binary number of each decimal number.
Decimal numbers Binary numbers
192 11000000
168 10101000
2 10
81 1010001
2
Each binary number should have eight digits. If a binary number does not have eight digits, add one or more 0’s
in front of it until it does. The binary number of each decimal number should be as follows.
Decimal numbers Binary numbers
192 11000000
168 10101000
2 00000010
81 01010001
The binary numbers of IP address 192.168.2.81 are therefore 11000000.10101000.00000010.01010001.