Page 15 - Computer Genius Class 07
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is greater than then 1 is orro ed rom the ne t position. hen the inary digit orro s 1
rom the ne t most significant digit it ecomes 1 .
X Y X – Y
1 1
1
orro 1 so that 1 1 1
1 1 1
1 1 1 1
For e ample let us su tract the inary num er 111 rom 1 .
2 2
1 1
1 1 1 _____
orro
1
1 1 1
1
odern day inary num er system as in ented y ott ried e ini in 1 .
Let's REFRESH
A num er system is a collection o num ers used to descri e arious uantities.
The decimal num er system consists o ten digits rom to .
The inary num er system consists o t o digits s and 1s.
The octal num er system is used as a shorthand representation o long inary num ers.
The he adecimal num er system consists o 1 digits rom to and A to F.
exercise
A. Tick ( ) the correct option.
1. hich o the ollo ing is called the right most digit e ore the ractional point in the inary num er
system
i SD ii SD
iii SD i one o these
Number System 13

