Computer exam notes

1-Ms excel-it is an application software used to create sheets2-Average= finds the average , =average(select)

3-Sum=totalsum , =sum(select)

4-Minimum=finds the cell with minimum value, =min(select)

5-Maximum=finds the cell with maximum value, =max(select)

6-countA = finds those cells which are not blank, =counta(select)

7-countblank=finds those cells which are blank, =countblank(select)

8-countif=finds that result match with the criteria or not, =countif(select,”y”)

9-countifs=finds that result match more than one criteria or not , =countifs(select,”Y”)

10-sqrt= returns the number into square root, =sqrt(number)

11-home tab=hometab is the most used tab,it includes text and cell formatting features

12-insert tab=insert tab help in inserting text boxes,pics,clipart,chart

Computer exam notes13-page layout tab=helps in adjusting margin,page orientation and theme of the page

14-page orientation= portrait and landscape

15-By default page comes in portrait orientation

16-Formula tab=library of formulas

17-Data tab=helps to modify data by sorting and filtering

18-Review tab=helps in correcting grametical mistakes and translation

119-Bibliography=list of sources from which information is gathered

20-Pivot table=pivot table helps in summarisingg lots of data into table/chart

21-Caption=heading/title/numbered labeled

22-Merger=merger option merges two or more cells

23-Header=piece of art,graphics,photo on the top of the page

25-Footer=piece of art,graphics,photo on the end of the page

1Notes

Computer exam notes26-Ms word=microsoftword allows the user to type and save document,and also helps in modifying the document by various tools

27-Format pointer tool=format pointer tool helps to copy formatting from one file to another

28-Mail merger=helps to create multiple letter,labels,tags

29-Margin=strips of white space on the edges of the page,by default page have 1INCH margin on the top and bottom

30-Footnote=piece of text,sources of formation on the bottom of the page

31-End note=sources/credit/citation on the end of entire document

32-Vlookup=virtual look up by searching the value on the left most column of the table and returning the value based on index number

33-Hlookup=horizontal look up by searching the value on the top most row and returning the value based on index number

34-DOS(disc operating number)=used for shorthandDir=directory

Rd=remove directory

Computer exam notesCopy=copy file

Del=delete file

Cd=change current directory

Cls=close terminal screen

Md=make new directory

Tree=internal command,show path to directory

Time=show system time

35-OS(operating system)=most important program which runs the system and OS does basic tasks such as-recognising input from keyboard,showing output to the screen

36-Windows=windows is the operating system of Microsoft and is suitabke for home and business computers

37-Worksheet=electronic sheet which contains lots of rows and column

38-Workbook=electronic book which contains lots of sheets

39-Ribbons=ribbons is the great way of understanding the change in ms office,because ribbons hold whole information about previous version on ms office

Computer exam notes40-Page break=word automatically break the page when you reach the limit,but with page break option you can manually break the page

41-Row height is expressed in pixels

42-Group of cell is called “RANGE”

43-RAM is of two types – 1=SRAM=static a(ndom access memory , 2=DRAM=dynamic random access memory

44-Difference b/w internet and interanet-:Internet- 1-public network 2-everyone can access 3-visitor traffic is unlimited

Intranet- 1-private network 2-limited people can access 3-visitor traffic is limited

45-Types of soft ware-:1-system software=designes to operate the system and provide a platform to computer,example –linux

2-Application software=designed to perform a specific task,example education software,games

Computer exam notes3-utility software=designed to improve the quality of computer system,example-firewall

46-Three types of network are-:1-LAN(local area network)-geographical boundries are small , minimum 2 comp are required to form LAN

2-WAN(wide area network)-geographical reach is larger than LAN, WAN can extent to nationwide/worldwide , costly process

3-MAN(metropolitian area network)-used in organizations which needs to connect several small facilities together for sharing information.

47-keyboard keys-:1-Fuctional keys= f1 – f12

2-Alpha numeric keys= a – z and 0 – 9

3-Cursor keys= right,left,up,down

4-Special keys= alt.ctrl,shift,space

48-monitor=VDU(virtual display unit) two types of vdu are- 1=CRT(cathode ray tube) 2=LCD(liquid cristal display)

Computer exam notes49-input device= those device which are used for giving command to system,such as-mouse,keyboard

50-Output device=those device from which we can get result,such as-monitor,printer,plotter

51-type of storage are= permanent storage=hard disc , temporary storage=RAM and ROM

52-advantage of computer= accurate,saves time,saves money,never gets tired,high storage capacity

53-disadvantage of computer= no IQ ,understand binary language only,depend on us,no feeling

54-spaces-:4byts=1nibble

8byts=1bite

1024bite=1kb

1024kb=1mb

1024mb=1gb

Computer exam notes1024gb=1tb

1024tb=1hb

55-APPLICATION of computer are -:BANK, EDUCATION, MARKETTING, HEALTHCARE, ENGENEERING, GOVERNMENT, COMMUNICATION

56-MOD function=returns the remainder after the number is divided by its divisor =MOD(SELECT)57-NOW function=refresh the date and time whenever worksheet recalculate =NOW()58-TODAY function-refresh the date whenever worksheet recalculate =TODAY()59-COUNT function= counts the total number of cell =count(select) 60-software=software is collection of instruction,that enable the user to interact with the system

Computer exam notes61-advantages of computer network are-: 1=enable file sharing

2=helps in sharing software

3=increase storage capacity because too many systems are connected together through network.62-disadvantages of computer network are-:1=security issues-if one computer is hacked then hacker can command all the computers because all the systems are connected through network

2=virus issues-if one system is infected by virus ,then all of them can get infected because virus can spread through network

3=expensive setup

4=totally dependent on the main server

63-reference tab=reference tab allows you to create table of content,page of citation

64-cross reference=commonly used in large document,used to direct reader to another part of document such as image,text

65-mailing tab=allows you to send mail such as printing envelope,labels tags

Computer exam notes

maDe by-: VAIBHAV NEGIcomputer important theory(INTRODUCTION,MS EXCEL,MS WORD,NETWORKS) .