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.

 OR

(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

 OR

(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?

Explain.

 OR

 (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

 OR

(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.

 OR

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

(b) Define hardware and software interrupts.

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