O LEVEL- IT TOOLS & BUSINESS SYSTEM
TRICKS TO CRACK FIRST PAPER:
M1-R4: IT TOOLS & BUSINESS SYSTEMS
SOME IMPORTANT TOPICS WHICH FREQUENTLY ASKED EVERY YEAR:--
CONVERSION OF FOLLWINGS----
How to convert decimal to binary
Conversion steps:
1.
Divide the number by 2.
2.
Get the integer quotient for the
next iteration.
3.
Get the remainder for the binary digit.
4.
Repeat the steps until the quotient
is equal to 0.
How to convert from octal to
decimal
A
regular decimal number is the sum of the digits multiplied with 10n.
Example #1
137
in base 10 is equal to each digit multiplied with its corresponding 10n:
13710 =
1×102+3×101+7×100 = 100+30+7
Octal
numbers are read the same way, but each digit counts 8n instead
of 10n.
Multiply
each digit of the hex number with its corresponding 8n.
Example #2
37
in base 8 is equal to each digit multiplied with its corresponding 8n:
378 =
3×81+7×80 = 24+7 = 31
Example #3
7014
in base 8 is equal to each digit multiplied with its corresponding power of 8:
70148 =
7×83+0×82+1×81+4×80= 3584+0+8+4 =
3596
How
to convert hex to binary
How to convert from hexadecimal number to binary number.
How to convert base 16 to base 2.
How to convert from hex to binary
Convert each hex digit to 4 binary digits according to this
table:
|
Hex
|
Binary
|
|
0
|
0000
|
|
1
|
0001
|
|
2
|
0010
|
|
3
|
0011
|
|
4
|
0100
|
|
5
|
0101
|
|
6
|
0110
|
|
7
|
0111
|
|
8
|
1000
|
|
9
|
1001
|
|
A
|
1010
|
|
B
|
1011
|
|
C
|
1100
|
|
D
|
1101
|
|
E
|
1110
|
|
F
|
1111
|
Example #1
Convert (4E)16 to binary:
(4)16 = (0100)2
(E)16 = (1110)2
So
(4E)16 = (01001110)2
Example #2
Convert (4A01)16 to binary:
(4)16 = (0100)2
(A)16 = (1010)2
(0)16 = (0000)2
(1)16 = (0001)2
So
(4A01)16 = (0100101000000001)2
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