1
|
What
are the different types of binary codes?
|
Types
of binary codes
|
|
2
|
What is meant by
alphanumeric code and numeric code?
|
Alphanumeric
code
Numeric
code
|
|
3
|
What is meant by BCD
code?
|
BCD
code
|
|
4
|
Explain the term :
Code word
|
Code
word
|
|
5
|
Describe the
different types of BCD code?
|
BCD
code
|
|
6
|
What is meant by
weighted code and non – weighted code?
|
Weighted
code
Non
– weighted code
|
|
7
|
What is meant by Positive weighted code and Negative weighted code?
|
Positive
weighted code
Negative
weighted code
|
|
8
|
What is meant by
sequential code?
|
Sequential
code
|
|
9
|
Describe the
condition for self complementing code.
|
The
given code is self complementing if the sum of the all weights of number is
equal to 9. The 2421, 5211, 642 – 3, 84 – 2 – 1 are example of self
complementing codes.
|
|
10
|
What is cyclic code?
|
Cyclic
code
|
|
11
|
Which code is called
as unit distant code? Give example
|
Cyclic
code
|
|
12
|
Write one application
of cyclic code.
|
The
cyclic code is used to translating an analog quantity of shaft position into
digital quantity.
|
|
13
|
Why the 8421 BCD code
is also called as naturally binary code?
|
8421
BCD code
|
|
14
|
Describe the
disadvantages of 8421 BCD code over binary code.
|
Disadvantages
of 8421 BCD code over binary code
|
|
15
|
Describe the
advantages of 8421 BCD code over binary code.
|
Advantages
of 8421 BCD code over binary code
|
|
16
|
Describe the main
difference between BCD code and 8421 BCD code.
|
8421
BCD code
|
|
17
|
Which are the illegal
8421 BCD codes? Why?
|
There
are 1010, 1011, 1100, 1101, 1110 and 1111 are illegal code because some of
all weight of each code is greater than 9.
1010
= 8 + 0 + 2 + 0 = 10
1011
= 8 + 0 + 2 + 1 = 11
1100
= 8 + 4 + 0 + 0 = 12
1101
= 8 + 4 + 0 + 1 = 13
1110
= 8 + 4 + 2 + 0 = 14
1111
= 8 + 4 + 2 + 1 = 15
|
|
18
|
How the Excess 3 code
is derives?
|
The
Excess 3 code is derives by addition of three 0011 to 8421 BCD code.
|
|
19
|
Which are the invalid
states in the Excess 3 code? Why?
|
There
are following invalid state in the Excess 3 code because some of its weight
is less than three or greater than 13
0000
= 0 + 0 + 0 + 0 = 0
0001
= 0 + 0 + 0 + 1 = 1
0010
= 0 + 0 + 1 + 0 = 2
1101
= 8 + 4 + 0 + 1 = 13
1110
= 8 + 4 + 2 + 0 = 14
1111
= 8 + 4 + 2 + 1 = 15
|
|
20
|
Why the Gray code is
also called as cyclic code?
|
Gray
code
|
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