BBA105 – Computer Fundamentals

 

 

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Summer 2013

 

Bachelor of Business Administration- BBA Semester 1

 

BBA105 – Computer Fundamentals- 2 Credits

 

(Book ID: B1501)

 

Assignment (30 marks)

 

Note: Answer all questions. Kindly note that answers for 10 marks questions should not exceed 400 words. Each question is followed by evaluation scheme.

 

Q1. The journey of computer started in 1940 and went through a series of changes which led the growth of different generations of computer. Give a brief description on generations of computer.

(Listing the various generations- 2 marks, explanations- 5 marks, Examples for each- 3 marks )10 marks

 

Answer : Various generations of computer:

 

The history of computer development is often referred to in reference to the different generations of computing devices. Each of the five generations of computers is characterized by a major technological development that fundamentally changed the way computers operate.

 

1. First Generation (1940-1956) Vacuum Tubes

 

2. Second Generation (1956-1963)

 

 

Q2. a. Determine the decimal equivalent of the given number (34.51)₈

(Decimal to octal conversion- formula- 2 marks, Calculation- 3 marks)

 

Answer : Decimal to octal conversion formula :

 

To convert integer decimals to octal, divide the original number by the largest possible power of 8 and successively divide the remainders by successively smaller powers of 8 until the power is 1. The octal representation is formed by the quotients, written in the order generated by the algorithm. It is one of the most commonly explained problems in computer basics.

 

 

 

 

 

b. determine the decimal equivalent of the given number (155)₁₆

(Decimal to hexadecimal conversion- formula- 2 marks, Calculation- 3 marks) 5+5 marks

 

Answer : Decimal to hexadecimal conversion- formula:

 

Hexadecimal is base 16.

Base 16 is where the ‘numbers’ you can use are zero through to the letter F (0123456789ABCDEF). i.e. the decimal value for ‘1’ is represented in hexadecimal as ‘1’ but the hexadecimal value of ’15’ (decimal) is shown as ‘F’ (hexadecimal) and the value of ’17’ (decimal) is ’11’ in Hexadecimal. Also a Hexadecimal is converted into decimal by taking the base 16. The rest of the process is

 

 

 

Q3. Write short notes on :

a. Magnetic disc description

(explaining-3 marks figure- 2 marks)

 

Answer : Magnetic disc description:

 

A memory device, such as a floppy disk, a hard disk, or a removable cartridge, that is covered with a magnetic coating on which digital information is stored in the form of microscopically small, magnetized needles. The disk surface is divided into concentric tracks (

 

 

 

 

b. CD ROM description 5

(explaining- 3 marks, figure- 2 marks)

 

Answer : CD ROM :

 

A CD-ROM is a pre-pressed compact disc which contains data. The name is an acronym which stands for “Compact Disc Read-only Memory”. Computers can read CD-ROMs, but cannot write on them. CD-ROMs are popularly used to distribute computer software, including video games and multimedia applications, though any data can be stored (up to the capacity limit of a disc).

 

 

 

 

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