Q.
What is Data?
A
collection of raw facts and figures is called data. Data is collected from
different ways. It is not Useful. meaningful and cannot be used for decision
making. Data may be in the form of numbers, characters, symbols; sounds etc.
Q.
What is Data Processing?
The
process of convening data in to useful information is called data processing. For example, arithmetic operations, Logical
ions. Searching of data. etc.
Q.
What is Information?
The
processed data is called information. Information is useful- and meaningful It
can be used for decision-making Data is used as input for data processing.
Information is output of data process.
Q.
What is Information Technology?
Information
technology is defined as "The technology that combines computing with high
speed communication links for carrying data in form of text, sound. image.
video etc.
Q.
What is Digital Convergence?
Due
to information technology, different organizations, industries and institutions
are linked with each other. They can exchange information with each other.
Q.
What is Computer?
A
computer is machine that can be programed to accept data (Input). Process it
(Processing) in to useful information.
Q.
What is Hardware.
Physical
components of computer called hardware. We can touch, see feel the hardware.
Hard is used for input, output, processing and storage.
Q.
What is Software?
The
set of instructions given to computer to solve a specific problem is called
Software. Software is also called computer program
Q.
What is System Software?
The
program that is necessary for the working of computer is called the system
software. System software controls the different parts of computer. Computer
cannot work without system software.
Q.
What is Application Software?
These
are programs that are designed to solve some problems users. They help the user
to perform specific task.
Q.
What is Operating System?
It
is a system program that manages all resources of computer. Computer cannot
work without operating system. DOS and Windows are example of operating system.
Q.
What is Utility Program?
These
are system programs that are used to perform some specific task. Antivirus is
an example of utility program.
Q.
What is Customized Software?
This
software is to solve specific problem of a user. These are developed a customer
or an organization.
Q.
Define Package Software.
Package
software is developed for general public. They solve some common problem that
is faced by many peoples. For example, Word processors. Spread Sheet. Graphics
and communication programs.
Q.
What is Input?
The
data and instructions given to computer to perform a specific task are called
input. Input is given to-computer with input devices.
Q.
What are Input Devices.
The
devices that are used to enter data and instructions is are called input
devicisÀtnpu1 devices rake data-and instruction.
Q.
What are the types or Input Devices?
There
are two types of input devices
Direct
Input Devices
Indirect
Input Devices
Q.
What is a keyboard?
Keyboard
is the most commonly used input device. The buttons on the keyboard arc called
keys. A keyboard contains more than 100 keys.
Q.
What do you mean by QWERTY?
The
standard keyboard is called "QWERTY" keyboard. This-is-because-of the
first six keys on top row of alphabet are Q. W.E.R.T.Y
Q.
What are Pointing Devices?
A
pointer is a small symbol that appears on the screen in graphical user
interface. A pointing device is an input device that is used to control the
position of the pointer or cursor on the screen.
Q.
What is Mouse?
It
is a small lightweight input device. It is moved on a flat surface to control
the movement of the cursor on screen. It has two or three buttons at its top,
to perform a specific task with mouse. First pointer is moved to a certain
place. Then these buttons are used.
Q.
What is Trackball?
It
is also a pointing device. It is similar to mouse. It can be used as an
alternative to a mouse. It is a stationary device. It has a rolling ball on the
top. The hall is rolled with figure. Rolling the ball controls the position of
cursor. Track ball need less space.
Q.
What is Touch pad?
A
touch pad is a small. flat surface. This surface is sensitive go pressure and
motion. Sliding the fingers on touch pad moves the pointer on the screen. It
also has one or more buttons. These buttons are close to the tough pad. These
buttons are work like mouse buttons.
Q.
What is Touch Screen?
It
is a video display screen. Input is given by touching the screen at some
specific place. It is covered with a plastic layer. Behind the plastic layer.
there is beam of light. The user enters data by touching icons or menus on the
screen. Touch Screen is often used in ATM, Tablet PC and PDA etc.
Q.
What is Barcode Reader?
Barcode
reader is an input device. It is a source data entry device. It is used to read
barcode.
Q.
What is MICR?
MICR
stands for Magnetic Ink Character Recognition. It is used to read text that is
printed by using magnetized ink. It is used in hanks for processing cheques.
Each cheque contains MIRC characters at the lower left edge.
Q.
What is OMR
OMR
stands or Optical Marks Recognition. These are used to read special marks or
symbols printed on paper. OMR is used to read answer sheets of objective type
examination. OMR uses a light beam to read data and convert in to signals. These signals are sent to computer
for processing.
Q.
What is OCR?
OCR
stands for Optical Character Recognition. OCR reads printed characters and
converts into digital code that is by computer. OCR is used to read utility
bills and price tags in departmental stores.
Q.
What is Magnetic Stripe Card?
It
is a card that has a strip of magnetically encoded data on its back. They are
used for personal identifications during driving, departmental stores, at
public places etc.
Q.
What smart Card?
A
smart card looks like a credit card. This card contains a microprocessor and a
memory chip. This card is used into a 'special card reader. The card reader can
read and update its Contents.
Q.
What is Facsimile?
A
Fax machine is also called facsimile transmission machine. It uses telephone
line to send images to another fax machine- It scans-an image printed on paper,
converts it in to electrical Signals and sends ii to another fax machine. The
receiving fax machine converts the signals in to an image and print on paper.
Q.
What is Digital Camera?
Digital
Camera takes picture and stores it in digital format: The shape of digital
camera is like an ordinary camera. It uses a light sensitive processor chip. It
stores digital images on a storage media like Floppy Disk, P, C. Card.
Q.
What is Pointing stick?
A
pointing stick is a pressure sensitive pointing device. Its shape is like
pencil eraser. It exists between G, H and B keys of keyboard. When user pushes
pointing stick in different directions the pointer the screen moves.
Q.
What is Graphics Tablet?
A
digitizing tablet is also called digitizer. It consists of a flat board and a
stylus or puck. The stylus or puck is cither Wireless or connected to the
tablet "ire. A stylus is a pen like device used to create sketches and
images. A puck is device that is used to copy image. It is also used to make
drawing. We make best drawings with tablet
Q.
What is Light Pen?
A
light pen is a hand held pointing device. It looks a pen. connected by wire
with computer. It information to computer When touches the pen on specific of a
mostly graphics designer illustrators use light pen.
Q.
What is Joystick?
It
is also a pointing device. It has a vertical handle mounted On a base with two
buttons. The movement of pointer is controlled by vertical handle. some
computer added design systems
Q.
What is Pen-Based System?
These
systems use a pen like stylus. With help of stylus can write on the computer
screen. We do not need typing from keyboard with the help of this system,
student may be able to notes in class with out and ink. We can connect
electronic white board of the classroom with student's computer.
Q.
What are Source Data Entry Devices?
The
devices that are used for direct data entry to computer system are called
source data entry devices. There is fast input devices- We can enter data very
quickly and efficiently.
Q.
Define Barcode.
Bar
code an identification code. It consists of vertical lines and spaces of
different width. Bar Code represents data Information is displayed on different
products in the form of bar code. Bar code is also called "Universal
Product Code".
Q.
Which technologies are used in Flat Panel Display Screens?
Flat
panel monitors are lightweight, take less space and consume less power than CRT
monitors. There are three types of display screens.
• Liquid Crystal Display
• Electronic Luminescent Display Gas
• Plasma Display
Q.
What is a printer?
A
printer is a hardware device. It is used to print characters. symbols and
graphics on paper. The printed output is called copy output.
Q.
What are different types of Printers?
Printers
are divided in to two types
1.
Impact Printers
2.
Non-Impact Printers
Q.
What are Impact Printers?
An
impact printer prints text or images by sticking a hammer or wheel against an inked
due to strike of hammer images or characters appear on Screen.
Q.
What are Non-Impact Printers?
Non-Impact
Printer prints text and graphics without sticking hammer or wheel on paper.
They use different technologies for printing.
Q.
What is Dot-Matrix Printer?
It
is an impact printer. It has a print head containing small pins. These pins
strike on an inked ribbon against paper and make a character or image. print
heads are available. with 9,18 or 24 pins. Higher the number of pins. faster is
the speed of printing.
Q.
What is Daisy Wheel Printer?
Daisy
Wheel printer uses a "heel called daisy Wheel. The wheel has a series of
petals. There is a character at the end of each petal. This wheel can rotate
when a specific petal comes in front of paper a hammer striker on the petal.
The petal strikes on an inked ribbon and character is printed on paper. It is
slower than dot matrix but better in quality.
Q.
What are basic Units of Data Storage?
The
binary number I or 0 is called a bit. It is the basic unit for storing data in
computer memory. It is the smallest unit of data storage. One bit takes one
storage location in memory.
Q.
What is a System?
A
system can be defined as the combination of different components that interact
with each other to perform specific tasks. To perform different tasks in system
different procedures are used.
Q,
Define SDI-C.
SDLC
stands for system development life cycle. It is an organized way of developing
successful computerized system. SDLC consists of different phase.
Q.
Define Preliminary Investigation?
This
is the first phase of SDLC. In this phase the initial analysis of the system is
performed.
Q.
What is Preliminary Plan?
In
this Stage we make a feasibility report. In which all-important information is
provided: It is submitted to the top management of the organization. They take
decision about the system after studying this report.
Q.
What is the purpose of System Analysis?
In
this phase the current system- is studied in detail. Its purpose is.to prepare
specification for new system.
Q.
What are data gathering techniques?
The
following techniques are used for this purpose.
• Written Documents
• Interviews
• Questionnaires Observations
• Sampling
Q.
What is the purpose of Interviewing?
The
analyst conduct interview of concerning persons of ad organization and tries to
know the required information about current system. The questions asked in
interviews must be precise and relevant.
Q.
What is the use of Questionnaires?
Some
time it is difficult to control an interview. so questionnaires designed to
collect useful information. It is very convenient method of getting
information.
Q.
What is Analysis Report?
At
the end of analysis phase analysis report is generated. It is presented to
higher management. Analysis three parts. These parts are
• It explains current system,
• It tells the problems of current
system.
• It the requirements for new
Q.
What is the purpose or Coding Phase?
In
this phase system is developed. System is divided in to parts. Each is
developed separately. These combined to make a complete This phase needs a lot
of time and budget. Programmer is the person who in this phase. The program
specifications are given to programmer. Pro writes code according to given
specification.
Q.
Why is Test Phase?
When
the system is developed testing phase starts. It is very important phase. The
main purpose of testing is to detect and remove errors in the stem.
Q.
What is Parallel Implementation?
In
this type of implementation new and old system are used side by the results of
both systems are compared. When the new system starts old System is stopped.
Q.
What is Pilot Implementation?
In
this type of implementation only some selected persons can use All workers
cannot use new system.
Q.
What is Phased Implementation?
In
this of implementation different parts of system are implemented at different
times. Gradually whole system is implemented.
Q.
What is Direct Implementation?
The
user stops working on old system and starts working on new system.
1 comment:
well manufacturer app
i hope in this way i got highly marks and your writing in very easy that most of people take benefits
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