Computer Note

Computer Notes

Prepared by : Nadeem Ashraf Janjua

Q	Why we use computer in Schools ?
Ans	Ø To prepare result. Ø To make time table. Ø To type letters. Ø For learning and understanding.
Q	Why computer is used in Banks?
Ans	To keep account of customer’s money to make entries is passbooks.
Q	What is the use of computer in Offices?
Ans	Ø To type letters and reports. Ø To prepare salary slips.
Q	Why we use computer at Home?
Ans	Computer are used at home Ø To draw picture Ø To play games Ø To listen music
Q	What is the use of computer in Shops?
	Ø To make bills Ø To keep record of items Ø To record the price of items
Q	What is the use of computer in Hospital?
Ans	Computers are used in hospital to keep the record of patient to diagnose the disease.
Q	Why computer used in Railway, Airport and Food Center?
Ans	Computer are used to Ø Record of Tickets Ø For Reservations Ø For price Record
Q	What are three essential parts of computer?
Ans	Ø CPU Ø Keyboard Ø Monitor
Q	What other devices makes a computer useful?
Ans	Ø Mouse Ø Keyboard Ø Printer Ø CD
Q	What is a Keyboard?
Ans	ü Keyboard is an input device ü It looks like a typewriter ü It has many keys to enter data into computer
Q	What is CPU?
Ans	CPU (Central Processing Unit) is the brain of computer that performs all the calculation.
Q	What is the brain of Computer?
Ans	Monitor is an output device that shows the result of work done by the computer .
Q	What is (VDU)?
Ans	Monitor is also known as VDU. The full form of VDU is video Display Unit.
Q	What is Mouse?
Ans	Mouse is a input device. It is used to click and select the items. It has two button and a wheel. A mouse is kept on mouse pad.
Q	What are the types of Mouse?
Ans	There are two types. ü Mechanical Mouse (Has a track Ball) ü Optical Mouse (Has laser beam)
Q	What is a printer?
Ans	Printer is an output device it prints the result on paper.
Q	What is a Floppy Disk?
Ans	Floppy is a storage device. A floppy has a square shape and 3.5 inches in size.
Q	What is CD?
Ans	The full form of CD is Compact Disk.  It is a storage device.
Q	What is Digital Video Disk?
Ans	Digital Video Disk is also known as DVD. It is a storage device.
Q	What is USB?
Ans	USB stands for Universal Serial Bus. USB flash drive is portable device. It is fast and small in size, and store large data.
Q	What is Pen Drive?
Ans	USB (Universal Serial Bus) is also known as Pen Drive.
Q	What is the difference between CD and DVD?
Ans	CD ü It Stores small amount of Data			DVD It Stores Large amount of Data
Q	What is the difference between keyboard and mouse?
Ans	Keyboard ü Keyboard is used enter text					Mouse     Mouse is used to Click and select                  program
Q	What is the difference between Monitor and Printer?
Ans	Monitor ü Monitor shows result on screen				Printer      Printer prints result on paper
Q	What happens on the screen when you move mouse on Mouse Pad?
Ans	When we move mouse on mouse pad an arrow like pointer mouse on the screen.
Q	What is the use of Storage devices? Give name of two devices.
Ans	Storage devices are used to store data. Some are CD, DVD, USB, Floppy.
	How does a Computer Work
Q	Name the three major tasks performed by the computer?
Ans	The three major tasks are ·        Input ·        Processing ·        Output
Q	Name the two parts of computer which perform input function?
Ans	The three major tasks are ·        Keyboard ·        Mouse
Q	Name the two parts of computer which perform output?
Ans	The three major tasks are ·        Monitor ·        Printer
Q	What do you mean by processing?
Ans	The calculation work is called processing For Example! ü Adding two number is called processing  2+2=4 ü Making Juice is processing
Q	What is input? Explain with example.
Ans	The data which you give to compute is called input. For Example ü Enter two number 7,7 ü Put the Orange in Juice
Q	What is Output? Explain with example.
Ans	The result of work done by the computer is output. For Example. ü Result of two number addition is 14 ü The result is Juice in glass
Q	Write two examples of input, Process and Output?
Ans	v Adding two number		v Making Orange Juice
	Input Process Output	Enter two number 7,7 Add two number 7+7 Result =14	Print orange in Juicer Make the Juice Juice in Glass
THE  END Nadeem ashraf janjua

 

Computer basic info Set 1

Computer Set 1(Basic)

Prepare By :NADEEM ASHRAF JANJUA

Q	What are the characteristics of computer ?
Ans	i)                   Speed: Computer do their work fastly. ii)                 Accuracy: Computer produce accurate result. iii)               Storage Capacity: Computer have large memory to store data. iv)               Diligence: Computers do not get tired. v)                 Versatility: Computer can perform multiple tasks at the same time.
Q	What is primary memory?
Ans	RAM and ROM are called primary memories because these are directly connected with motherboard.
Q	What are the part of computer?
Ans	A Computer system consists of two parts (i)                Hardware      (ii)       Software
Q	What is Dictionary Application?
Ans	Computer Dictionary is an application on computer which provide the complete support of words.
Q	What is Encyclopedia?
	It is an application software which provide detailed information about different topics to the students.
Q	What is a language used for?
Ans	A language is used to communicate with other’s.
Q	What are computer Languages?
Ans	To give instructions to computer. We need some languages. These languages are called compute language.
Q	What are commands?
Ans	Instructions written in proper manner so that computer can understand them are called commands
Q	What is a program?
Ans	Group of commands written for the computer to solve a problem.
Q	What are programming Language?
Ans	Compute language which are used to write programs for computer are called programming language. Some example are: §  LOGO §  BASIC §  COBOL §  FORTRAN §  C/C++
Q	What is the purpose of BASIC?
Ans	The full form of BASIC is beginners. All Purpose Symbolic Instruction Code. It used by the begin to learn programming.
Q	What is LOGO?
Ans	LOGO stands for Logic Oriented Graphic Oriented Language. It is used for teaching purpose.
Q	What is COBOL?
Ans	The full form of COBOL is Common Business Oriented Language. It is used for business purpose.
Q	What is FORTRAN?
Ans	FORTRAN stands for Formula Translation. It is used for scientific problems.
v Janjua Brothers