A computer is an electronic device that can store, process, and retrieve data. It allows users to type documents, send emails, play games, and browse the web. There are several types of computers including PCs, workstations, mini computers, mainframes, and super computers. The document also defines and provides examples of computer components, parts, and peripherals like motherboards, RAM, ROM, hard drives, graphics cards, web browsers, search engines, ports, cables, operating systems, and control panels. It explains concepts such as IP addresses, websites, blogs, antivirus software, video conferencing, online shopping, and modems.

1. q.1 What is computer ?
by
1
Ans . A computer is an electronic
device that manipulate information or
data. . It has the ability to store ,
retrieve, and process data. You may
already know that you can use a
computer to type documents , send
email play games & browse the web. A

2. q.2 What are the types of
computer ?
by
2
Ans . There are five types of
computer
1.PC ( Personal Computer )
2.Workstation
3.Mini Computer
4.Main Frame
5.Super Computer

3. Definations of Types of computers .
1/21/2021
by 3
PC : It is a single user computer system
having moderately powerful processing
Workstation : It is similar to PC however
has a more powerful microprocessor .
Mini Computer : It is a multi user
computer capable of supporting
hundereds of users simontaneously .
Mainframe : Sopftware technology is different from Mini
computer .
Super computer : It is an extremely fast
computer which can execute hundereds of
millions of instructions per seconds

4. RAM
• The info. Stored in the
RAM is easily accessed
because it communicates
directly with the
processor .
• Volatile in nature Data is
stored as long as the
power supply is switched
on .
• Data is temporary
• The accessing speed of
RAM is faster
ROM
• The processor cannot
directly access the info.
Hence , the info. Will be
transffered into the RAM
and then it gets executed
by the processor to access
the ROM .
• Non-Volatile in nature Data
is stored even when the
power supply is switched
off .
• Data is permanent
• The Accessing speed of
ROM is slower .
1/21/2021 by 4

5. 1. Fire fox
2. Google chrome
3. Internet explorer
4. Opera
5. Safari
6. Maxthon
7. Flock
8. Avant Browser
9. Deepnet Explorer
10. Phase out
1/21/2021
by
5
Q.4 Name Top 10
Web Browsers ?

6. 
 A motherboard is one of the most essential parts of a computer
system . It holds together many of the crucial components of a
computer including the central unit memory and connectors for
input & output devices .
1/21/2021 by 6
Q.5 Write a short note on Motherboard
with Diagram ?

7. The hard disc is spindle of
magnetic discs, called
platters , that record and
store information . The hard
drive also transmits data
back and forth between the
CPU and the disc .
1/21/2021
by 7

8.  Ans . A web search engine or internet search engine is a
software system that is designed to carry out web search ,
which means to search the world wide web in a systematic
way .
The top 10 Search engines are :-
1. Google
2. Bing
3. Yahoo
4. Baidu
5. AOL
1/21/2021 by 8
Q.7 WHAT IS SEARCH ENGINE?
6. Ask.com
7. Excite
8. Duck Duck Go
9. Yandex
10. Internet Archive

9.  Ans . Serial ATA ( Serial Advanced Technology
Attachment ) is a standard for connecting and
transferring data from hard disk drives ( HDDS) to
computer systems . As its name implies , SATA is
based on serial signaling technology , unlike
Integrated drive . Electronics (IDE) hard drives
that use parallel signaling .
Q. 8 What is SATA Cable
?

10. Ans . A vediographicss array (VGA) cable
is a type of cable that carries visual display
data from the CPU to the Monitor . A
complete VGA cable consists of a cable
and a connector at each end , and the
connector are typically blue .
1/21/2021
by
10

11. Q.10 What is LAN Cable ?
1/21/2021
by
11
 Ans . A Local Area Network (LAN) is
a computer network that
interconnects computer within a
limited area such as residence ,
school, laboratory, university, campus
or Office building .
 Ethernet and Wi-Fi are the most
common technologies in use for Local
Area Network .

12. Q.11 WHAT IS THE DIFFERENCE
BETWEEN SERIAL PORTS AND PARALLEL
PORTS ?
 Serial ports are
used for serial
communication that
is bit by bit
sequence .
 This port can
transmit single or 1
bit at a time.
 Data transmission is
slow .
 They are used for
parallel type of
communication that is
multiple bits parallel.
 It can transmit more
than 8 bits a time .
 Data transmission is
fast as compare to
serial ports.
 Parallel ports can
deliver several streams
1/21/2021
by 12
Parallel Ports
Serial Ports

13. Q.12 Explain USB ?
Ans. USB stands for “ Universal
Serial Bus” . USB is the most
common type of computer port used
in today’s computers . It can be used
to connect keyboards, mice , game
controllers, printers , scanners digital
cameras and removable media drives.
1/21/2021
by
13

14. Q.13 WRITE A SHORT NOTE
ON HDMI ?
Ans . (High-Defination Multimedia Interface ) is a propriatary
audio/Video interface for transmitting uncompressed video data and
compressed or uncompressed digital audio data from an HDMI
compliant source device such as display controller to a compatible
computer monitor , video projector .
1/21/2021 by 14

15. Q.14 What is Operating System ?
 Ans . An Operating System, (OS) is a interface between
a computer user and computer hardware . An operating
system is a software which performs all the basic tasks
like file management , memory management , process
management , handing input and output and controlling
peripheral devices such as disc drives and printers .
by
15

16.  Ans. When upgrading to windows 7 the biggest
difference between 32 bit and 64 bit windows 7 ,
32 bit windows 7 can utilize a maximum 4 GB of
memory . In comaprison 64 bit windows 7 can
mange upto 192 GB of memory .
1/21/2021 by 16

17. Q.16 WHAT IS SMPS?
Ans. A Switched-mode power supply
is an electronic circuit that
converts power using switching
devices that are turned on and off
at high frequencies & storage
components such as inductors or
capacitors to supply power when
the switching device is in its non-
conduction state .
B Y 17

18. 
1/21/2021 by 18
Q.17
Ans. HTML is first developed by Tim-
berners in 1990 , HTML is short for
Hypertext Markup Language . It is
used to make electronic documents
that are displayed on the www. Each
page contaions a series of connectors
to other pages called hyperlinks .
Every web page you can see on the
internet using one version of HTML

19. Q.18 What is the version of MS Office ?
Ans. Microsoft Office 2019
It is the current version of Microsoft office , a productivity suite ,
succeeding Office 2016 . It was released to general availability for
windows 10 and for MACos on September 24 , 2018 .
1/21/2021
by 19

20. Ans . The control panel is a
component of microsoft windows
that provides the ability to view and
change system settings . It consists
of a set of applets that includes
adding or removing hardware &
software , controlling user accounts,
change accessibility options and
Q.19 WHAT IS CONTROL PANEL ?
1 / 2 1 / 2 0 2 1
20
B Y

21. Q. 20 WHO IS AN COMUTER HACKER ?
 A computer hacker is a computer expert who
uses their technical knowledge to achieve a
goal or overcome an obstacle , within a
computerized system by non-standard
means . Though the term hacker has
become associated in popular culture with a
security hacker , someone who utilizes their
technical know how of keys or exploits to
break into computer systems .
1/21/2021
by
21

22. Q.21 What is an IP Address ?
 An internet protocol address ( IP address ) is a
numerical label assigned to each device connected to a
computer network that was the Internet protocol for
communication . An IP Address serves two main
functions host or network interface identification and
location addressing .
1/21/2021 by 22

23. 
 The recycle bin is an icon on the windows or desktop
that represents a directory where deleted files are
temporarily stored . This enables you to retrieve files
that you may have accidentally deleted . From time
to time , you’ll want to purge the recycle bin to free
up space in your hard disc .
1/21/2021 by 23
Q.22 What is recycle Bin?

24. Q.23 WHAT IS GUI ?
A GUI ( Graphic User Interface ) is
a system of interactive visual
components for computer software
.
GUI objects include icons n, cursors
and buttons .
A GUI is considered to be more
user –friendly than text based
command line interface , such as
MS-Dos or the shell of unit like
opearting system . B Y 24

25. Q24 WHAT IS A WEB PAGE ?
 A webpage is a document commonly written in
HTML , that is viewed in an Internet Browser . A
web page can be accessed by entering a URL
address into a browser bar .
1/21/2021
25
by

26. Q.25 What is Internet Exploral ?
1/21/2021
by
26
 Internet exploral is a www browser that comes with
the bundel with the Microsoft windows operating
system (OS) . The browser was deprecated in
Windows 10 in favor of microsoft’s new Edge
Browser .

27. Q26.What is Online Shopping ?
Online Shopping is a form of
electronic commerce which
allows consumers to directly
buy goods or services from a
seller over the internet using a
web browser .
by 27

28. Q.27 What is Video Conferencing ?
• Video Conferencing is a visual
communication session between two or
more users regardless of their location ,
featuring audio and video content
transmission .
1/21/2021
by
28

29. Q.28 What is a Blog ?
1/21/2021
by
29
 A blog is also known as a web blog . It is a
website that is like a diary or journal . Most
people can create a blog and then write on that
blog . Bloggers often write aboout their opinions
and thoughts .

30. Q29 ? What is an Antivirus ?
OAn Antivirus software helps
protect your computer
against malware and cyber
criminals . Antivirus
software looks at data-
webpages, files, software
applications-travelling over
the network to your device .
1/21/2021
by 30

31. A modem is a hardware device that
coverts data from a digital format between
devices with specialised wiring , into one
suitable for a transmission medium such
as telephone lines or radio.
1/21/2021
by
31