2nd Class Computers What is Data and Information? Types of Data

Types of Data

Category : 2nd Class

*        Types of Data

 

Data is divided into three types:

  • Alphabetic data
  • Numeric data
  • Alphanumeric data  

 

*    Alphabetic Data

There are twenty - six alphabets in English language. These 26 alphabets are used to represent alphabetic data. It consists of capital letters from A to Z, small letters from a to z and blank space. Alphabetic data is also called non numeric data.

 

 

 

 

 

 

 


Question.jpg    

 

 Read the statements given below and select the correct statement.

1. A person's name would be rejected if it contained any numeric data.

2. A bank-account number would be rejected if it contained any alphabetic data.

(A) Only 1 is correct                                        

(B) Only 2 is correct

(C) Both are correct                                       

(D) none of these  

 

Answer: (C)

Explanation

Correct Option:

(C) Both statements are correct.

Incorrect Options:

(A) Not only stat.1 is correct but stat 2 is also correct.

(B) Not only 2 is correct but 1 is also correct.

(D) None of these are incorrect.    

 

 

 Hary asked teacher- what is alphabetic data? Teacher: Alphabetic data consists of letters of alphabets and blanks space. Examples of these types of data are United Kingdom, Raymond, etc. Is teacher correct in his/her explanation?

 


           

 

 

 

(A) Yes, Teacher is right                                

(B) No, Teacher is incorrect

(C) Partially correct                                         

(D) Can't say  

 

Answer: (a)

Explanation

Correct Option:

(A) Teacher is correct.

Incorrect Options:    

(B) Since teacher is correct that's why Option (B) is incorrect.

(C) Option (C) is incorrect.

(D) Option (D) is incorrect.  

 

*     Numeric Data  

Numeric data is made up often digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, two signs (+ and -) and decimal point. There are different types of number system that are used to. Represent numeric data. These number systems are decimal number system, binary number system, octal number system and hexadecimal number system.  

 


             

 

 

 

Question.jpg    

 

 There are different number systems that are used by the computer. Which of the following number systems is/are used by the computer?

(A) Decimal number system

(B) Octal number system

(C) Hexadecimal number system

(A) Only (A)                                      

(B) Both (A) and (B)

(C) All of these                                                 

(D) None of these  

 

Answer: (c)

Explanation

Correct Option:                                          

(C) Decimal, octal, hexadecimal, etc are the different types of number systems.

Incorrect Options:

(A) Option (A) is incorrect.

(B) Option (B) is incorrect.

(D) Option (D) is incorrect.    

 

 

 Multiply 150 by 250. Result is 37500. The following are the statements based on the above applications:

 

 

 

 

1. 37500 is input data.

2. Multiplication is the output i.e. information

3. 150 and 250 is the processing system.

4. 37500 is the information i.e. output.

 

Which one of the following options is true for above statements?

(A) 1, 2                                                                 

(B) Only 4 is true

(C) All are true                                                  

(D) All are false

 

Answer: (b)

Explanation

Correct Option:

(B) In the above example 150 and 250 are the input (data), multiplication is the process and 37500 is the output.

Incorrect Options:

(A) Statement 1 and 2 are incorrect.

(C) All statements are not correct.

(D) All statements are not incorrect.  

 

*    Alphanumeric Data
 

Alphanumeric data is used to represent alphabetic data, numeric data, special characters (such as / \ *, "@) and symbols.  

 

 

 

 

 

Question.jpg    

 

 Which of the following statements is/are correct?

1. Alphanumeric data is used in computer coding to create passwords.

2. In computing, alphanumeric characters take up six bits of information rather than eight bits. 

(A) Only 1                                                           

(B) Only 2

(C) 1 and 2                                          

(D) None of these  

 

Answer: (c)

Explanation

Correct Option:

(C) Both the statements are correct.

Incorrect Options:

(A) Not only statement 1 is correct but also statement 2 is correct.

(B) Not only statement 2 is correct but also statement 1 is correct.

(D) Both the statements are not incorrect.    

 

 Match the following           

            A                                                  B

1. Jasmine                                i. Alphanumeric data

2. Bank account                       ii. Alphabetic data

3. E-mail id                               iii. Numeric data

(A) 1, i; 2, ii; 3, iii                                               

(B) 1, ii; 2, i; 3, iii

(C) 1, iii; 2, ii; 3, i                                

(D) 1, ii; 2, iii; 3, i  

 

Answer: (D)

Explanation

Correct Option:

(D) The name of any person is an alphabetic data, bank-account is a numeric data and e-mail id is alphanumeric data.

Incorrect Options:

(A) Option (A) is matched incorrectly.

(B) Option (B) is matched incorrectly.

(C) Option (C) is matched incorrectly.

 

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