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computer file for elementry computer application's.pptx
1. STANI MEMORIAL P.G. COLLEGE
PRACTICAL FILE
Elementary Computer Application
Submitted By: jaikishan godara Submitted To:
2. S.NO
.
TOPIC DATE ______
______
___
1 The architecture of computer
system
20th Jan
2 Hardware and software
20th Jan
3 Input and output devices 20th Jan
4 Computer memory 20th Jan
5 Mail Merge 20th Jan
6 Four function are explained 20th Jan
7 Spread sheet 20th Jan
8 M-commerce 20th Jan
9 History of internet 20th Jan
10 Eight function are explained 20th Jan
11 Thirty-five short keys are written 20th Jan
12 Computer network 20th Jan
3. 1. Explain the architecture of a computer system?
Answer1.A computersystemisbasicallyamachinethat simplifiescomplicatedtasks. Itshouldmaximizeperformanceand reducecosts
aswellaspower consumption.ThedifferentcomponentsintheComputerSystemArchitectureareInputUnit,Output Unit,StorageUnit,
ArithmeticLogicUnit,ControlUnit,etc.
Adiagram that showstheflowofdata betweentheseunits isas follows â
6. 2. What do you mean by hardware and software? Write down the types of computer
software?
Answer2.ComputerHardware:
Hardwarerefers tothephysicalcomponentsof acomputer.ComputerHardwareisanypartofthe
computerthatwecantouchtheseparts.Thesearetheprimaryelectronicdevicesusedtobuildupthe
computer.ExamplesofhardwareinacomputeraretheProcessor, MemoryDevices,Monitor,Printer,
Keyboard,Mouse,andtheCentralProcessingUnit.
ComputerSoftware:
Softwareisacollectionofinstructions,procedures,documentationthatperforms different tasksona
computersystem.wecansayalsoComputerSoftwareisaprogrammingcodeexecutedonacomputer
processor. Thecodecanbemachine-levelcodeorthecodewrittenforanoperatingsystem.Examples
ofsoftware areMsWord,Excel,PowerPoint,GoogleChrome,Photoshop,MySQLetc.
17. 4. What do you understand by computer memory? Explain
types of memory in computer?
Answer4. Computermemoryisagenerictermfor allof thedifferent typesofdatastoragetechnology
thatacomputermayuse,includingRAM,ROM,andflashmemory.
Thekeydifference between primaryandsecondarymemoryisspeedofaccess.
â˘PrimarymemoryincludesROMandRAM,andislocatedclosetotheCPUonthecomputermotherboard,
enablingtheCPUtoreaddatafromprimarymemoryveryquicklyindeed.Itisusedtostore datathatthe
CPUneedsimminentlysothatitdoes nothavetowaitforittobedelivered.
â˘Secondarymemorybycontrast,isusuallyphysicallylocatedwithinaseparatestoragedevice,suchas
aharddiskdriveorsolid-statedrive(SSD),whichisconnectedtothecomputersystemeitherdirectly
oroveranetwork.Thecostpergigabyteof secondarymemoryismuchlower,butthereadandwrite
speedsaresignificantlyslower.
34. 11. Write down the shortcut keys for the following purposes:
I. New Document = Ctrl + N
II. Open a document = Ctrl + O
III. Save a document = Ctrl + S
IV. Save as a document = F12
V. Print a document = Ctrl + P
VI. New Slide = Ctrl + M
VII. Hyperlink = Ctrl + K
VIII. Superscript = Ctrl + Shift + +
IX. Subscript = Ctrl + =
X. Cut = Ctrl + X
XI. Copy = Ctrl + C
XII. Paste = Ctrl + V
XIII. Undo = Ctrl + Z
XIV. Redo = Ctrl + Y
XV. Increase font size =Ctrl+ Shift+>
XVI. Decrease font size =Ctrl + Shift+<
XVII.Underline = Ctrl+ U
XVIII.Bold = Ctrl + B
36. 12.What do you mean by computer network?
Answer12. Acomputernetworkisagroupofcomputerslinkedtoeachotherthatenablesthecomputerto
communicatewithanothercomputerandsharetheirresources, data,andapplications.
Acomputernetworkcanbecategorizedbytheirsize.Acomputernetworkismainlyof fourtypes:
42. Advantages of Wide Area Network:
Following are the advantages of the Wide Area Network:
o Geographical area: A Wide Area Network provides a large geographical area. Suppose if the
branch of our office is in a different city then we can connect with them through WAN. The
internet provides a leased line through which we can connect with another branch.
o Centralized data: In case of WAN network, data is centralized. Therefore, we do not need to
buy the emails, files or back up servers.
o Get updated files: Software companies work on the live server. Therefore, the programmers
get the updated files within seconds.
o Exchange messages: In a WAN network, messages are transmitted fast. The web
application like Facebook, WhatsApp, Skype allows you to communicate with friends.
o Sharing of software and resources: In WAN network, we can share the software and other
resources like a hard drive, RAM. o Global business: We can do the business over the internet
globally.
o High bandwidth: If we use the leased lines for our company then this gives the high
bandwidth. The high bandwidth increases the data transfer rate which in turn increases the
productivity of our company.
43. Disadvantages of Wide Area Network:
The following are the disadvantages of the Wide Area
Network:
o Security issue: A WAN network has more security issues as
compared to LAN and MAN network as all the technologies
are combined together that creates the security problem.
o Needs Firewall & antivirus software: The data is transferred
on the internet which can be changed or hacked by the
hackers, so the firewall needs to be used. Some people can
inject the virus in our system so antivirus is needed to
protect from such a virus.
o High Setup cost: An installation cost of the WAN network
is high as it involves the purchasing of routers, switches.
o Troubleshooting problems: It covers a large area so fixing
the problem is difficult.