COMPUTER BASIC MCQ,MCQ,Data Representation ,Programming Languages /Computer Languages ,Software: System Software , Application Software,SIMPLE MCQ,INTRODUCTION TO INFORMATION TECHNOLOGY,COMPUTER BASICS

1. INTRODUCTION TO INFORMATION
TECHNOLOGY
R.SARASWATHI
SRI AKILANDESWARI WOMENS COLLEGE

2. UNIT II
• Input and Output Devices:
• Input Devices - Output Devices - Data
Representation - Programming Languages
/Computer Languages - Software: System
Software - Application Software

3. • CPU is the --------- of computer.
– A. Brain
– B. Ear
– C. Eye
– D. All above these

4. • WHICH OF THE FOLLOWING PERFORMS ARITHMETIC
AND LOGIC OPERATIONS?
– A. Control Unit
– B. Arithmetic Logic Unit
– C. I/O Unit
– D. Registers

5. • Computers are used by which of the following
professions
– Business
– Art
– Education
– All of the above

6. • A keyboard is an example of a _________
device.
– Input
– Output
– Storage
– None of the above

7. • Devices that allow you to put information into
the computer ___________
– Input
– Output
– Type
– Print

8. • A desktop computer is also known as
– A. PC
– B. Laptop
– C. Mainframe
– D. Palmtop

9. • ----------- computer is the most powerful
computer.
– A. Mini
– B. Micro
– C. Super
– D. Mainframe

10. • ----------- is the physical device of a computer
system.
– A. Program
– B. Software
– C. Hardware
– D. Application

11. • Which of the following is not a characteristic
of a computer?
– A. Speed
– B. Intelligence
– C. Automation
– D. Versatility

12. • Which of the following is not Computer
Hardware?
– A. Mouse
– B. Monitor
– C. Printer
– D. Antivirus

13. • Computer is a/an ----------
– A. battery
– B. input device
– C. monitoring device
– D. electronic device

14. • ----------- is processed by the computer into
information.
– A. Data
– B. Processor
– C. Numbers
– D. Input

15. • Which of the following is the smallest
computer?
– A. Desktop
– B. Notebook
– C. Laptop
– D. Workstation

16. • Personal computer is a --------
– A. Mini computer
– B. Super computer
– C. Micro computer
– D. Mainframe computer

17. • Non physical components of the computer are
referred to as
– A. Software
– B. CPU
– C. Hardware
– D. Program

18. • What is called the starting up on operating
system?
– A. Starting
– B. Entering
– C. Booting
– D. Formatting

19. • Which of the following is an example of web
browser?
– A. C++
– B. Tally
– C. Internet explorer
– D. MS word

20. • What of these full form of e-mail?
– A. Electric mail
– B. Electromagnetic mail
– C. Electronic mail
– D. None of these

21. • OCR stands for
– A. Optical coding recognizer
– B. Original code reader
– C. Optical character recognition
– D. Original character reader

22. • Which of the following is hard ware and not
software?
– A. Excel
– B. Operating system
– C. Control unit
– D. Power point

23. • Which of the following is part of the system
unit?
– A. Monitor
– B. Floppy Disk
– C. CPU
– D. CD-ROM

24. • Click and double-click are achieved using the
– A. Mouse
– B. Headphone
– C. Modem
– D. Keyboard

25. • CPU is an abbreviation for
– A. Computer processing unit
– B. Central processing unit
– C. Control processing unit
– D. Command processing unit

26. Data Representation
• Data Representation refers to the form in
which data is stored, processed, and transmitted.
• In a computer, data are stored in the form of
binary digits 0 and 1.
• A single binary digit 0 or 1 called bit.
• A group of 8 bits called byte.

27. Data Representation
• The computer processes any information only
in the form of binary digit.
• Therefore all information must be converted
into a binary equivalent before computer
processes any datA.

28. Data Representation
• The terms bits, bytes, nibble and word are used widely in reference
to computer memory and data size.
• Bits: can be defined as either a binary, which can be 0, or 1.It is the
basic unit of data or information in digital computers.
• Byte: a group of bits (8 bits) used to represent a character. A byte is
considered as the basic unit of measuring memory size in computer.
• A nibble: is half a byte, which is usually a grouping of 4 bytes.
• Word: two or more bits make a word. The term word length is used
as the measure of the number of bits in each word. For example, a
word can have a length of 16 bits, 32 bits, 64 bits etc.

29. ASCII
• American code for information interchange.
• It is a code for representing 128 English characters as
numbers, with each letter assigned a number from 0 to 127.
• For example, the ASCII code for uppercase M is 77.
• Most computers use ASCII codes to represent text, which
makes it possible to transfer data from one computer to
another.

30. Bit & Byte Table
• Bit
• Byte
• Kilobyte
• Megabyte
• Gigabyte
• Terabyte
• Petabyte

33. Computer programming language
• Computer programming language, any of various
languages for expressing a set of detailed instructions for a
digital computer.
• Such instructions can be executed directly when they are in
the computer manufacturer-specific numerical form known
as machine language, after a simple substitution process
when expressed in a corresponding assembly language, or
after translation from some “higher-level” language.
• Although there are many computer languages, relatively
few are widely used.

35. Machine language
• Sometimes referred to as machine
code or object code, machine language is a
collection of binary digits or bits that the
computer reads and interprets.
• Machine language is the only language a
computer is capable of understanding.

36. • Below is an example of machine language
(binary) for the text "Hello World.“
• 01001000 01100101 01101100 01101100
01101111 00100000 01010111 01101111
01110010 01101100 01100100

37. ASSEMBLY LANGUAGE
• An assembly language is a low-level programming language designed for a specific
type of processor.
• It may be produced by compiling source code from a high-level programming
language (such as C/C++) but can also be written from scratch. Assembly code can
be converted to machine code using an assembler.
• Since most compilers convert source code directly to machine code, software
developers often create programs without using assembly language.
• However, in some cases, assembly code can be used to fine-tune a program. For
example, a programmer may write a specific process in assembly language to make
sure it functions as efficiently as possible.
• ADD Z
• SUB A
• STA 2500H

38. HIGH LEVEL LANGUAGE
• A high level language program can’t get executed directly.
It requires some translator to get it translated to machine
language.
• High level language is the next development in the
evolution of computer languages. Examples of some high-
level languages are given below
– PROLOG (for “PROgramming LOGic”)
– FORTRAN (for ‘FORrmula TRANslation’)
– LISP (for “LISt Processing”)
– Pascal (named after the French scientist Blaise Pascal).

39. Software
• Computer software, or simply software, is a
collection of data or computer instructions
that tell the computer how to work.
• Software is a set of programs, which is
designed to perform a well-defined function. A
program is a sequence of instructions written
to solve a particular problem.

40. Software
• There are two types of software −
– System Software
– Application Software

42. System Software
• Software required to run the hardware parts of
the computer and other application software
are called system software.
• System software acts as interface between
hardware and user applications. An interface is
needed because hardware devices or machines
and humans speak in different languages.

43. System Software
• Operating System
• Language Processor
• Device Drivers

44. System Software

45. Application Software
• A software that performs a single task and nothing else
is called application software.
• Application software are very specialized in their
function and approach to solving a problem.
• So a spreadsheet software can only do operations with
numbers and nothing else.
• A hospital management software will manage hospital
activities and nothing else.

46. Application Software
• Word processing
• Spreadsheet
• Presentation
• Database management
• Multimedia tools

47. Application Software