My Questions Related To Computers, Software And Internet

I have been reading the books "Learning Computers For Smarter Life - Book 1 to Book 5", authored by Manuj Bajaj and Anil Ahlawat. I have these questions in my mind for which I would like to get answers. The questions are

1. When was Windows Vista released first?
2. Sometimes the keyboards, mouse has a Microsoft logo. Does that mean that they are manufactured by Microsoft? I thought Microsoft only manufactures software applications, not hardware or other products. 
3. Do some websites that has videos in it cause Virus in my computer?
4.  How do some computer security software like Kaspersky protect the computer from virus?
5. What kind of websites attack our computer and cause virus?

Do comment your answers. Thank you. 

Types Of Computer Screens

Today, I learnt about different types of computer screens. Here is a picture I created using MS Word.

Enjoy Learning

How Mathematics Triggered An Idea to Make Edu Products

I started to learn 'I Did It Mathematics - Book 5'. There was a play activity to make flash cards on large numbers, their number names and their expanded forms. The game was for a group of children and when the teacher would tell a number, the students who has the flash card for the number, number names and its expanded form, join together to form a group. And the game continues.

Since I am homeschooling and I didn't have friends around, Amma and myself came up with an idea to make flash cards and play a memory game which we will do later.

In the meanwhile, we integrated technology with our Mathematics lesson. 

The Properties Of A Computer File

Have you ever seen a lot of icons on a desktop of your computer? Those icons are called as files. Files are stored everywhere in your computer. They are in the desktop, they are in the documents folder, picture folders etc. They are scattered all around in your computer. 

What I have learnt today is each file has its own properties. When I right clicked a file and looked into the properties of the file, what I saw is each file has its own name which we know already and it also has a file type. For example, a MS Word file where we type a lot of content is stored as a DOC file. A picture file is stored as a JPG file.