One Sentence Summary of All Chapters in Magic in Words

1. My Heart Leaps up when I behold
The poem " My Heart Leaps up When I Behold" is about the joy the poet feels at the sight of a rainbow which has been source of his ecstasy since his childhood and will continue to be so till his old age.

2. Speaking of Children
One child is an appendage and the parents can have privacy and proper guidance of the child where as the plural children is the end of privacy and the beginning of the obligations.

3. Look at a Teacup
 The writer who has decided to remain unmarried fearing disintegration, inherits china cups from her mother which were bought in 1939 and they have the pictures of falling flowers, which are significant and symbolical.

Difference between Multitasking, Multiprocessing, Multiprogramming

Multitasking	Multiprocessing	Multiprogramming
In this system several tasks are carried out at one time.	In this system several processor are carried out at on time to do several task.	In this system several task are carried.
Powerful RAM is required.	Powerful processing required.	Powerful RAM and space is required.
Available in different device.	Not available in all devices.	Easily available in all devices
It carries out program slower than Multiprocessing.	It carries out program fast as two processor is used.	It carries out programs one after another.

Application of Gauss Law : Metallic charged sphere

                Gauss Law states that “Total electric field in a body is equal to the total electric charge enclosed in a body by electric permittivity in vacuum.”

Mathematically,              

Ø = Electric field

q = total charge enclosed

E₀ = Electric permittivity in vacuum

Now,

                By Gauss Law, finding the electric field enclosed in a body. A sphere with radius r and having charge q. Let us create a Gaussian surface and the radius of created surface is r. The charge enclosed in a body is +q.

Some Important Differences of Computer Science of Grade XI

Analog Computer & Digital Computer

Analog Computer	Digital Computer
The computer which is based on continuous data is known as analog computer.	The computer which is based on discrete data is known as digital computer.
It measures only physical or natural quantities such as water flow, current and voltage.	It is based on digits that are 0 and 1 or OFF and ON state.
It is used for specific purposes.	It is used for general purposes.
These computers are suited for physics and engineering.	These computers are suited for graphical works, documentation, business and industrial processes.
Has no storage or memory capacity.	Has high storage or memory capacity.
Cost is low compared to digital computers.	Cost is high compared to analog computers.
E.g.: Thermometer, Speedometer etc.	E.g.: IBM PC, MAC Book etc.

Primary & Secondary Memory

Primary Memory	Secondary Memory
Low storage capacity.	High storage capacity.
Used for short term basis.	Used for long term basis.
Also called Main memory.	Also called Auxiliary memory.
Faster than Secondary memory.	Slower than Primary memory.
It is temporary / permanent memory.	It is permanent memory.
Expensive than Secondary memory.	Cheaper than Primary memory.
E.g.: RAM, ROM etc.	E.g.: Magnetic drums, tapes, disks etc.

Computer Virus

Introduction

Computer virus is a kind of program that destroys the functioning power of computer smoothly. Viruses have many purposes-some are designed to play annoying tricks, whereas others have destructive intent.

Symptoms of Virus

Chapter Internet and Email Notes (Computer Science)

Internet and Email

Webpage

A web page is a Document commonly written in HTML that is accessible through the    internet or other network using a browser. A web page    is accessed by a URL address and many contain text, Graphic, hyperlink etc are linked to other page.

OR,

A web page is a web document that is suitable for the world-wide-web.   

Website

A website is a set of related webpages typically served from a single web domain