Chapter 1: Mouse
Mouse
Mouse is an input device.
Mouse is used to give command to the computer.
A mouse has two or three buttons on it.
A mouse is kept on a pad called a mouse pad.
When you move the mouse on the pad, an arrow(pointer) moves on the monitor. This is called the mouse pointer.
Mouse is connected to the C.P.U.
Mouse is an input device.
Mouse is used to give command to the computer.
A mouse has two or three buttons on it.
A mouse is kept on a pad called a mouse pad.
When you move the mouse on the pad, an arrow(pointer) moves on the monitor. This is called the mouse pointer.
Mouse is connected to the C.P.U.
Assignment
Answer the following questions
1. How many buttons does a mouse have?
Ans: A mouse has………….or………….. buttons.
2. What is the name of the arrow-like symbol of the mouse.
Ans: The arrow-like symbol of the mouse is called a…………..
3. What is a mouse used for?
Ans: A mouse is used for………..
Write [T] for the true statements and [F] for false statements.
a The mouse is an output device.
b. The mouse has only one button.
c. The mouse is used to copy and paste texts.
d. The mouse is connected to the keyboard.
e. The mouse cannot be used to draw pictures.
Chapter 2: Keyboard
Keyboard
Keyboard is an input device.
Keyboard is used to give command to the computer.
A keyboard consists of a number of keys. A keyboard has alphabet keys, number keys, function keys, arrow keys etc.
Alphabet keys are used to type text.
Number keys are used to type numbers.
Arrow keys are used to move cursor to different directions.
The enter keys are used to move the cursor to the next line.
The space bar is is used to make space between words,
Function keys make our work easier.
Answer the following questions
1. How many buttons does a mouse have?
Ans: A mouse has………….or………….. buttons.
2. What is the name of the arrow-like symbol of the mouse.
Ans: The arrow-like symbol of the mouse is called a…………..
3. What is a mouse used for?
Ans: A mouse is used for………..
Write [T] for the true statements and [F] for false statements.
a The mouse is an output device.
b. The mouse has only one button.
c. The mouse is used to copy and paste texts.
d. The mouse is connected to the keyboard.
e. The mouse cannot be used to draw pictures.
Chapter 2: Keyboard
Keyboard
Keyboard is an input device.
Keyboard is used to give command to the computer.
A keyboard consists of a number of keys. A keyboard has alphabet keys, number keys, function keys, arrow keys etc.
Alphabet keys are used to type text.
Number keys are used to type numbers.
Arrow keys are used to move cursor to different directions.
The enter keys are used to move the cursor to the next line.
The space bar is is used to make space between words,
Function keys make our work easier.
Assignment
Fill in the blanks:
a........ keys are used to type numbers.
b. We use ....... key to type letters.
c. .......... key makes our work easier.
d. The ....... key moves the cursor to the next line.
e. The longest key of the keyboard is the........
f. The keyboard is an ......... device.
Complete the following answers:
Why is the keyboard used in computers?
A keyboard is used in the computer to give ………. to the computer.
Where is keyboard connected?
A keyboard is connected to the ………...
- The full form of CPU is Central Processing Unit.
- The CPU is kept inside a cabinet called a CPU box.
- Like human brain, the CPU can process data and give result.
- The result displayed by the CPU on the monitor is called an output.
- All parts of a computer are connected to the CPU.
- The CPU controls all the parts of a computer.
- The CPU can do even complex calculations quickly.
- It is more powerful and faster than human brain.
- All parts of a computer are connected to the CPU. The CPU controls all the parts of a computer.
A. Complete the following answers
1. What is the brain of a computer?
The .....................is the brain of a computer
2. What is the full form of CPU?
The full form of CPU is ............
3. Where is the CPU located?
The CPU is located inside a ...............box
2 Write [T] for the true statements and [F] for the false ones:
a.The CPU is kept inside a cabinet or box.
b. The CPU stands for Control Processing Unit.
c. The CPU cannot solve complex calculations.
d. The CPU cannot control the functions of a computer.
e. The CPU displays the result on the monitor.
Chapter 4: Monitor
Monitor is an output device.
The monitor displays alphabets, numbers and other symbols you type on the keyboard.
The front part of the monitor is called screen.
You can see the result of the computer on the monitor. This result is called output
A monitor can be used to watch movies and television programs. It is connected to the CPU by a wire.
Write [T] for the true statements and F] for the false ones.
a The monitor is not connected to the CPU.
b. The monitor does not display output.
c. The monitor can be used to watch TV programs
d. The monitor is an input device.
Complete the following answers:
1. What does a computer monitor look like?
A computer monitor looks like a ...........
b What is the front part of the monitor called?
The front part of the monitor is called...........
c. Write any two uses of a monitor?
1.A monitor displays alphabets and ...........
2. It can be used to watch.............
Question Answers
Mouse - https://www.youtube.com/watch?v=laUvZsljfts
Keyboard-https://www.youtube.com/watch?v=7V3iQlnsZzY
CPU-https://www.youtube.com/watch?v=OKVWvd87P7w
Monitor-https://www.youtube.com/watch?v=QeEPwsDWwWc
1.What do you mean by clicking on the computer?
Ans:Clicking means to press and release the mouse button.
2.What do you mean by left click?
Ans:Left click means to press and release the left button of the mouse.
3.What do you mean by right click?
Ans:Right click means to press and release the right button of the mouse.
4.What do you mean by single click?
Ans:Single click means to press and release the mouse button once. Single click is used to select an object or documents on the computer screen.
5.What do you mean by double click?
Ans:Double click means to press and release the mouse button twice. Double click is used to open a file or document.
6.Who invented the computer mouse?
Ans:The computer mouse was invented by a scientist called Douglas Engelbert.
7.How many buttons are there in the standard keyboard?
Ans:There are 104 keys in the standard keyboard.
8.What are the main parts of C.P.U.?
The Main parts of C.P.U. are
MU(Memory Unit)
ALU(Arithmetic Logic Unit)
CU(Control Unit)
Power button:.
Reset button
CD/DVD drive
USB port
Microphone slot
Chapter 5 :An Overview of Computer
Definition of a Computer
The word Computer is derived from the word "compute" which means to calculate.
Computer is a device capable of accepting data in the form of facts and figures, manipulating them in a prescribed way, and supplying the results of these processes as meaningful information.
Program
Computer converts unarranged facts and figures (data) into meaningful information under the set of instructions called programs.
The computer performs the following functions:
Input: The process of entering data and instructions into the computer system.
Storing: Saving data and instructions to make them readily available for initial or additional processing, as and when required.
Processing:Performing arithmetic operations or logical operations on data.
Output:The process of producing useful information for the user.
Data and Information
The word data is the Latin plural of datum.
It denotes raw facts and figures that can be processed or manipulated by a computer.
It can be in any form - raw facts on paper or in electronic form.
It includes words, numbers, images and sound.
These facts and figures, when processed, become information.
Information is anything that holds some values for its receiver. Information is also referred to as processed data.
Characteristics of Computer- Speed
- Accuracy
- Automation
- Storage
- Diligence
- Versatility
Speed
Speed of computer may be defined as the time taken by a computer to perform a task. It takes only a few seconds for the calculations that we take hours to solve.
2.Accuracy
The computers are the accurate machines that can perform a large number of tasks without errors, but if we feed wrong data to the computer it returns the same wrong information called GIGO (Garbage In Garbage Out).
3. Automation
Computer is an automatic machine which works without the intervention of the user. The user is required to give the data and utilize the result but the process is automatic.
4.Storage
Computer has a mass storage section where we can store a large volume of data for future use.
5.Versatility
Able to do two or more than two work at same time with same efficiency.
6.Diligence
Able to work for long period of time with same efficiency without getting tired.
GIGO (Garbage In Garbage Out).
If the input data are not correct, this may also lead to incorrect output. The computers follow the simple rule of GIGO (Garbage In Garbage Out).
Application of Computer
1. Education
2. Banking
3. E-commerce
4. Industry
5. Hospital
6. Cinema
7. Airport
8. Home
1. Education
-ICT is low cost solution for educating many skills to a large number of people in less time at their own pace.
-Using ICT both the teacher and students can save their time
-Online Education, Distant Learning, Online Examination etc are other purpose
2. Banking
-Banks are using ATMs for facilitating their customers to withdraw their amount.
-They can transfer their money to other accounts and can pay their utility bills online
3. E-commerce
-To buy and sell and exchange of products, services, and information using computer network
4. Industry
-Computers are used to manage business activities from shipment to distribution and advertising to selling their products
-to research about new products and raw materials
5. Hospital
-To keep record of medical and patient data
-medical imaging and equipment(used to control medical devices that perform CT Scans, ultrasounds, X-rays, MRIs, or blood tests.)
- patient monitoring
-research about new diseases and medicines
6. Cinema
-Put special effects in movies(animations)
-music(sound effects)
-editing
7. Home
-You can watch matches, movies, ceremonies and hear audio stuff .
-You can also download books, magazines, journals, newspapers, tutorials to learn skills.
-You can do text, voice and video chat using internet.
Airport
-To ensure that planes stay on schedule and that they fly safely
-Allows you to easily modify travel arrangements at any airport
-Computers are necessary for the use of pre- screening measures
-Computers are crucial to an airport's air traffic control services.
Limitations of a Computer
A computer cannot do anything unless they are first programmed with specific instructions.
Computer needs a proper environment for its working (i.e fixed temperature and a dust free environment).
Computer is a machine which may break down any time. Interruption in electrical current may cause system components to malfunction resulting in the loss of valuable data.
Computer cannot take care of itself like a human.
Definition of a Computer
The word Computer is derived from the word "compute" which means to calculate.
Computer is a device capable of accepting data in the form of facts and figures, manipulating them in a prescribed way, and supplying the results of these processes as meaningful information.
Program
Computer converts unarranged facts and figures (data) into meaningful information under the set of instructions called programs.
The computer performs the following functions:
Input: The process of entering data and instructions into the computer system.
Storing: Saving data and instructions to make them readily available for initial or additional processing, as and when required.
Processing:Performing arithmetic operations or logical operations on data.
Output:The process of producing useful information for the user.
Data and Information
The word data is the Latin plural of datum.
It denotes raw facts and figures that can be processed or manipulated by a computer.
It can be in any form - raw facts on paper or in electronic form.
It includes words, numbers, images and sound.
These facts and figures, when processed, become information.
Information is anything that holds some values for its receiver. Information is also referred to as processed data.
- Speed
- Accuracy
- Automation
- Storage
- Diligence
- Versatility
Speed
Speed of computer may be defined as the time taken by a computer to perform a task. It takes only a few seconds for the calculations that we take hours to solve.
2.Accuracy
The computers are the accurate machines that can perform a large number of tasks without errors, but if we feed wrong data to the computer it returns the same wrong information called GIGO (Garbage In Garbage Out).
3. Automation
Computer is an automatic machine which works without the intervention of the user. The user is required to give the data and utilize the result but the process is automatic.
4.Storage
Computer has a mass storage section where we can store a large volume of data for future use.
5.Versatility
Able to do two or more than two work at same time with same efficiency.
6.Diligence
Able to work for long period of time with same efficiency without getting tired.
GIGO (Garbage In Garbage Out).
If the input data are not correct, this may also lead to incorrect output. The computers follow the simple rule of GIGO (Garbage In Garbage Out).
Application of Computer
1. Education
2. Banking
3. E-commerce
4. Industry
5. Hospital
6. Cinema
7. Airport
8. Home
1. Education
-ICT is low cost solution for educating many skills to a large number of people in less time at their own pace.
-Using ICT both the teacher and students can save their time
-Online Education, Distant Learning, Online Examination etc are other purpose
2. Banking
-Banks are using ATMs for facilitating their customers to withdraw their amount.
-They can transfer their money to other accounts and can pay their utility bills online
3. E-commerce
-To buy and sell and exchange of products, services, and information using computer network
4. Industry
-Computers are used to manage business activities from shipment to distribution and advertising to selling their products
-to research about new products and raw materials
5. Hospital
-To keep record of medical and patient data
-medical imaging and equipment(used to control medical devices that perform CT Scans, ultrasounds, X-rays, MRIs, or blood tests.)
- patient monitoring
-research about new diseases and medicines
6. Cinema
-Put special effects in movies(animations)
-music(sound effects)
-editing
7. Home
-You can watch matches, movies, ceremonies and hear audio stuff .
-You can also download books, magazines, journals, newspapers, tutorials to learn skills.
-You can do text, voice and video chat using internet.
Airport
-To ensure that planes stay on schedule and that they fly safely
-Allows you to easily modify travel arrangements at any airport
-Computers are necessary for the use of pre- screening measures
-Computers are crucial to an airport's air traffic control services.
Limitations of a Computer
A computer cannot do anything unless they are first programmed with specific instructions.
Computer needs a proper environment for its working (i.e fixed temperature and a dust free environment).
Computer is a machine which may break down any time. Interruption in electrical current may cause system components to malfunction resulting in the loss of valuable data.
Computer cannot take care of itself like a human.
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