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0 0 0 – 0 = 0
0 – 1 = 1
0 1 (borrow 1, so that
10 – 1 = 1)
1 0 1 – 0 = 1
1 1 1 – 1 = 0
For example, let us subtract the binary number (111) from (1000) . Google’s first ever
2
2
1 1 tweet on Twitter
0 (10) (10) (10) _____ Borrow was “I’m 01100110
01100101 01100101
1 0 0 0 01101100 01101001
– 1 1 1 01101110 01100111
0 0 0 1 00100000 01101100
01110101 01100011
01101011 01111001
Let’s CatCh uP
00001010” which
Subtract the binary number 1001 from 10001. when translated from
binary to English, says
“I’m feeling lucky.”
Tech Fact
Modern day binary number system was invented by
Gottfried Lebiniz in 1679.
Let’s BaCk-uP If you multiply a
number by 9 and
A number system is simply a manner of counting. add the digits of the
The decimal number system consists of ten digits from resulting number till
0 to 9. the result is 1 digit, it
The binary number system consists of two digits 0s and 1s. will always be 9.
For example,
The octal number system is used as a shorthand representation 45 x 9 = 405
of long binary numbers.
4 + 0 + 5 = 9
The hexadecimal number system consists of 16 digits from 0
to 9 and A to F.
Number System 13

