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The rules for binary subtraction: Let us subtract the binary number
(111) from (1000) .
X Y X – Y 2 2
1 1
0 0 0 – 0 = 0 _____
0 (10) (10) (10) Borrow
0 – 1 = 1
0 1
(borrow 1, so that 10 – 1 = 1) 1 0 0 0
1 0 1 – 0 = 1 – 1 1 1
1 1 1 – 1 = 0 0 0 0 1
Reb t
A number system is a method of counting.
The Decimal Number System consists of ten digits from 0 to 9.
The Binary Number System consists of two digit, 0 and 1
The Octal Number System is used as a shorthand representation of long binary numbers.
The Hexadecimal Number System consists of 16 digits from 0 to 9 and A to F.
OneOne Touch Learn Section A (Objective)
A. Tick (3) the correct option.
1. In the decimal number system, what is the right-most digit before the fractional point
called?
a. MSD b. BSD
c. LSD d. None of these
2. What is another name for Base 2?
a. Binary number system b. Hexadecimal number system
c. Decimal number system d. Octal number system
3. Which of the following are the two symbols present in the binary number system?
a. 1 and 2 b. 8 and 9
c. 0 and 1 d. 5 and 6
4. What is the binary equivalence of (345) ?
10
a. (101011001) b. (111011101)
2 2
c. (110111001) d. (111110001)
2 2
26 iPro (Ver. 4.1)-VII

