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B.Sc in Computer Science and Engineering Program
161 Term (1st Year 1st Semester)
Final Examination
Course Code & Title: CSE1127 Computer Fundamentals
Total Marks: 70
Time: 3 Hours

[N.B.: Answer any 5 (five) questions. The figures in the right margin indicate the full marks. All portions of each question must be answered sequentially.]

1.
(a) Define Computer. Mention the contributions of Charles Babbage in the history of computer system. 1+2
(b) Briefly describe different generation of computer. 7
(c) What is the role of the CPU in a computer? Explain the different components of CPU. 4

2.
(a) Briefly explain different types of number systems with examples. 5
(b) Convert the following numbers as directed:
(i) (125.3125)₁₀ = (?)₂
(ii) (1011.101)₂ = (?)₁₀
(iii) (542)₈ = (?)₁₀
(iv) (95)₁₀ = (?)₁₆
(v) (1357)₈ = (?)₁₆
5
(c) Perform as directed:
(i) (11010)₂ + (1101)₂
(ii) (2735)₄ + (5432)₄
(iii) (7658B)₁₆ + (BAC54)₁₆
(iv) (110110)₂ - (1011)₂
(v) Find the 1’s and 2’s complement form of (11010101)₂

3.
(a) Define I/O devices. 2
(b) What is pointing device? Write the advantages of using pointing device with example. 2+2
(c) Why is an optical scanner? What are the three most common types of optical scanners? Briefly explain. 2+4
(d) Which monitor is better between LCD and LED and why? 2

4.
(a) How can data be stored in CD? 2
(b) Define tracks and sectors of hard disk. 2
(c) Briefly explain different types of impact and nonimpact printers. 6
(d) Write short notes on MICR. 2

5.
(a) Define computer memory. List the different types of memory available in computers and show the memory hierarchy by a diagram. 2+2
(b) What is primary memory of computer? Write the benefits of having large primary memory. 1+2
(c) Write short notes on:
(i) cache memory
(ii) EEPROM
2+2
(d) Distinguish between volatile and non-volatile memory. 3

6.
(a) Define computer language. Distinguish between low level and high level language of computer. 1+2
(b) Define software. Why is it necessary for a computer system? 1+2
(c) Distinguish between:
(i) compiler and interpreter
(ii) multiprogramming and multiprocessing
2+2
(d) Define
(i) device driver
(ii) operating system
2+2

7.
(a) Define computer networks and mention its goal. 2
(b) What is e-mail? How does it play role in our life? 1+1
(c) Briefly describe different types of network topology. 4
(d) Write short notes on the following:
(i) Browser
(ii) Internet
(iii) LAN
6

Bangladesh Open University
School of Science and Technology
B. Sc in Computer Science and Engineering Program
171 Term (1st Year 1st Semester) Final Examination
Course Code & Title: CSE1127 Computer Fundamentals
Total Marks (5×14): 70
Time: 3 (Three) Hours

[N.B.: Answer any 5 (five) questions. The figures in the right margin indicate the full marks. All portions of each question must be answered sequentially.]

1.
(a) Define computer. “Computer cannot do anything by itself.” Justify the statement. 1+3
(b) Computers are becoming more powerful but smaller in size. The price is also coming down: Discuss. 7
(c) Write the goal behind the development of fifth generation computers. 3

2.
(a) What is the role of the CPU in a computer? Explain the different components of CPU. 4
(b) “Hardware is useless without software.” Briefly explain. 2+2
(c) What is an input device? How does it differ from output device? 2+2

3.
(a) What do you understand by positional and non-positional number system? Why do we need to study binary number system in spite of having decimal number system? 5
(b) Convert the following numbers as directed:
(i) (105.125)₁₀ = (?)₂
(ii) (1101.101)₂ = (?)₁₀
(iii) (6342)₈ = (?)₁₀
(iv) (951)₁₀ = (?)₂BCD
(v) (1254)₈ = (?)₁₆
5
(c) Perform as directed:
(i) (11110)₂ + (11011)₂
(ii) (17616)₈ + (54371)₈
(iii) (5C5B8)₁₆ + (ABC5D)₁₆
(iv) (110110)₂ - (1011)₂
(v) Find the 1’s and 2’s complement form of (10101011)₂

4.
(a) What is computer language? Distinguish among low level, mid level and high level language. Give example of each. 1+5
(b) Write down the steps to develop software and firmware. 5
(c) Define operating system. Mention the importance of operating system. 1+2
(d) Define computer memory. Describe different primary storage of computer systems. 2+4

5.
(a) Define computer memory. Describe different primary storage of computer systems. 4
(b) Define track, cylinder and sector of hard disk. 3+1
(c) Explain cache memory. How is it different from primary memory? 3+2

6.
(a) Narrate how ink-jet printer works. 4
(b) Distinguish between LCD and LED monitor. 5
(c) Discuss memory segment 8086 microprocessor. 5

7.
(a) Define computer networks and mention its goal. Describe different types of network based on their scale. 2+4
(b) How does e-mail play role in our modern life? 2
(c) Write short notes on the following:
(i) search engine
(ii) flash memory
(iii) topology
2+2+2

Computer Fundamentals (BCS1121)
B.Sc. (Hons) in Computer Science
First Semester Examination, 141 Term (Jan – Jun, 2014)
Total Marks (5×14): 70
Time: 3 (three) Hours

[N.B.: Answer any 5 (five) Questions. The figures in the right margin indicate the full marks. All parts of each question must be answered sequentially.]

1.
(a) What was the invention of Babbage that had some of the characteristics of a modern computer? 2
(b) Computers are becoming more powerful but smaller in size. The price is also coming down. Discuss. 6
(c) Give an overview of the basic organization of computer system with the help of block diagram. 6

2.
(a) What is an input device? How does it differ from output device? 2+2
(b) What is platter of hard disks? Discuss the main components of hard disk drive. 2+4
(c) Describe flat panel display. 4

3.
(a) Write the functions of power supply unit of PC and describe its characteristics. 2+2
(b) Explain different types of printer. 6
(c) Mr. Seesh wants to provide links to his favorite songs on his website. He also wishes to listen to the songs before giving the link. Which of the following hardware is required? Justify your answer:
(i) Graphics card
(ii) Sound card
(iii) Network interface card
4

4.
(a) Define firmware. 2
(b) Hardware is of no use without software and software cannot be used without hardware. Explain. 6
(c) Classify software. Define with example of each. 6

5.
(a) Define memory and list the types of memory. 2+2
(b) Define data and information with suitable example. 5
(c) Explain cache memory. How is it different from primary memory? 3+2

6.
(a) Compare DOS and Windows operating system. 4
(b) Mr. Joy is an entrepreneur who has recently setup a new business. However, he needs to create a lot of documents, presentation, database and spreadsheets to maintain data and to spread his business. Can you suggest which software Joy can use that has all these packages? Write details about the software. 2+5
(c) What is database? Write the purpose of database management system. 1+2

7.
(a) Define computer networks and mention its goal. 1+1
(b) What is search engine? Explain the steps for searching information from internet. 1+3
(c) Write short notes on the following:
(i) E-commerce
(ii) Computer virus
(iii) Hacking
(iv) Router
8

Here is the written format of the Bangladesh Open University CSE1127 Computer Fundamentals exam from the last image:

Bangladesh Open University
School of Science and Technology
B.Sc in Computer Science and Engineering Program
181 Term (1st Year 1st Semester) Final Examination
Course Code & Title: CSE1127 Computer Fundamentals
Total Marks: 70
Time: 3 Hours

[N.B.: Answer any 5 (five) questions. The figures in the right margin indicate the full marks. All portions of each question must be answered sequentially.]

1.
(a) Define computer. “Charles Babbage is known as the father in the history of computer system.” Justify the statement. 1+2
(b) Write the technical evolution of the generations of computer. 6
(c) Describe the main features and characteristics of microcomputers and supercomputer. 3
(d) Draw a block diagram of showing basic organization of a computer system. 2

2.
(a) Define I/O devices. Write the importance of I/O devices. 2+2
(b) Describe different registers of a CPU. 4
(c) Write short notes on the following:
(i) OMR
(ii) MICR
(iii) Plotters
6

3.
(a) Why do we need to study binary number system in spite of having decimal number system? 3
(b) Convert the following numbers as directed:
(i) (205.125)₁₀ = (?)₂
(ii) (1001.101)₂ = (?)₁₀
(iii) (4762)₈ = (?)₁₀
(iv) (691)₁₀ = (?)₂BCD
(v) (2354)₈ = (?)₁₆
5
(c) Perform as directed:
(i) (10111)₂ + (11010)₂
(ii) (77216)₈ + (2357)₈
(iii) (2D7A2)₁₆ + (4AC51)₁₆
(iv) (110110)₂ − (1011)₂
(v) (53214)₈ + (12331)₈ + (12471)₈
(vi) Find the 1’s and 2’s complement form of (11001001)₂
6

4.
(a) Write short note on (i) computer language; (ii) plug and play. 2+2
(b) Differentiate between machine language and high-level language with example. 3
(c) Define software. Why is it necessary for a computer system? 1+2
(d) Define operating system. Mention the importance of operating system. 2+2

5.
(a) Define computer memory. Describe different primary storage of computer systems. 2+4
(b) Distinguish between volatile and non-volatile memory. 2
(c) Explain cache memory. How is it different from primary memory? 2+1
(d) How do you measure the performance of computer system? 3

6.
(a) Briefly explain different types of printers. 6
(b) What is scanner and mention the functions of it? What are the three most common types of optical scanners? Briefly explain. 2+4
(c) Define tracks and sectors of hard disk. 2

7.
(a) Define computer networks. Describe different types of network based on their scale. 2+3
(b) Write short notes on the following (any three):
(i) HTTP
(ii) Web browser
(iii) Upload and download
(iv) Topology
6
(c) Briefly explain different types of transmission media. 3

Bangladesh Open University
School of Science and Technology
B.Sc in Computer Science and Engineering Program
201 Term (1st Year 1st Semester) Final Examination
Course Code & Title: CSE1127 Computer Fundamentals
Total Marks: 70
Time: 3 Hours

[N.B.: Answer any 5 (five) questions. The figures in the right margin indicate the full marks. All portions of each question must be answered sequentially.]

1.
(a) Discuss the characteristics of 4th and 5th generation computers. 6
(b) What do you understand by central processing unit? Describe in detail the various units of CPU. 2+4
(c) What is Graphical User Interface (GUI)? 2

2.
(a) “4th generation languages are non-procedural”. Elucidate. 5
(b) Describe the hierarchy of computers according to power and their respective roles. 6
(c) What factors affect the speed of a microprocessor? 3

3.
(a) Convert the octal number 642 to decimal, binary and hexadecimal. 6
(b) Perform the following mathematical operations as directed:
(i) 1011 × 101
(ii) 1010 / 10
(iii) (8512)₈ + (1761)₈
(iv) Find the 1’s and 2’s complement form of (10010101)₂
4
(c) Write binary code for the word ‘SKY’ in ASCII-8. How many bits are required for this representation? Explain it. 4

4.
(a) Differentiate among PROM, EPROM and EEPROM. 3
(b) Define cache memory. Explain memory capacity of storage systems with appropriate example. 1+3
(c) Explain how read/write operation is carried out in an optical disk. 3
(d) What are real time operating systems? Which type of scheduling does it follow? 1+3

5.
(a) Differentiate between preemptive and no preemptive scheduling. 3
(b) What is VM? Write the advantages and disadvantages of VM. 1+3
(c) How does cache memory improve the performance of the system? 3
(d) How do you measure the performance of a computer system? 4

6.
(a) Draw the process state diagram for a time sharing system and explain it. 4
(b) Define flow chart and draw the basic flow chart symbols. 1+3
(c) Explain the Auto sum feature of a spreadsheet package with the help of an example. 3
(d) Write down the software development steps. 3

7.
(a) Write the basic elements and data transmission modes of communication systems. 2+2
(b) Define FTP and Telnet. How does E-mail play role in our modern life? 1+2
(c) Write short notes on the following (any three):
(i) Bandwidth
(ii) Modulation
(iii) Asynchronous
(iv) Switching
3
(d) Explain how to connect to another computer on your network. 4

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