Sunday, February 5, 2023

Dr. A.P.J. Abdul Kalam University BCA IV SEM Digital Computer Organization [BCA404T] June 2021 Question Paper

Dr. A.P.J. Abdul Kalam University

Bachelor of Computer Application

Fourth Semester Main Examination, June-2021

Digital Computer Organization [BCA404T]

Time: 3:00 Hrs Max Marks 50

Note : Attempt all questions. All questions carry equal mark

Q.1 (a) Explain Microprocessor.

(b) Explain hardware and software with suitable example.


(a) Write a short note on user interface.

(b) Explain any one user interface.

(c) Draw a labeled block diagram of computer. Explain each part of computer.

Q.2 (a) Define following -

(i) LCD screen (ii) LED screen (iii) CRT

(b) Write a short note on printer define its type


(a) Explain scanner and plotters

(b) Define following -

(i) Floppy disk (ii) Hard Disk (iii) Pen Drive

Q.3 (a) Write a short note on following -

(i) Cash memory (ii)Magnetictap drive

(b) What do you mean computer memory? How many types of computer memory?



 (a) Explain RAM and ROM explain different types of ROM.

(b) Define following -

(i) Memory Controller (ii) Optical Disk

Q.4 (a) Explain distributed processing or multiprocessing.

(b) Define following -

(i) LAN (ii) WAN (iii) MAN


(a) Write a short note on dumb and smart terminals computer network.

(b) Explain multiprogramming and multiuser system.

Q.5 (a) Write a short note on I/O processor and interrupt controllers.

(b) Define I/O architecture.


(a) Write a short note on DMA transfer and DMA controller.

(b) Define hardware and software interrupts.

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