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GENFRATIONS OF COMPUTERS   The history of computer development is referred to the different generations of computing devices. Let us learn about the various generations of computer.   First Generation (1940-1956)   The first generation computers used vacuum bes for electronic component and magnetic drums for memory, and they were very big in size.  The UNIVAC, ENIAC, EDVAC, IBM 701, etc., computers are examples of first- generaron computing devices.   Features: The size of the first generation Computers was very large . They used magnetic drums for storage.  They used vacuum tubes (VALVE) . They consumed a lot of power.  Storage capacity of first generation computers was very less and these computers are very slow. They were very expensive to operate.    कंप्यूटर के जनरेशन   कंप्यूटर विकास का इतिहास विभिन्न पीढ़ियों को संदर्भित किया जाता है कंप्यूटिंग डिवाइस। आइए कंप्यूटर की विभिन्न पीढ़ियों के बारे में...

A Short History of Computers and Computing   The word computer derives from the word ‘compute’, which means ‘to calculate’, The concept of counting is as old as the existence of human beings. An early human being used to count with the help of fingers. sticks, stones, bones. etc. Bur calculations with such objects has its own limitations and these calculations used to take a long time. So, as civilization grows up, man invented many calculating devices to make counting easy and fast.

Signing in to Windows 10   You'll probably be asked to create a Microsoft account the very time you use Windows 10 (if you don't have one already). From this point, whenever you  turn ON the computer you'll need to sign in to that account. To do this, type your password into the box and press Enter. Navigating the Desktop   Once you've signed in, the first thing you'll see is the desktop. You can think of the desktop as the main workspace for your computer. From here, you can view and manage your files, open applications, access the internet, and much more. Opening Applications   You'll use the Start menu to open programs on your computer, just like with previous versions of Windows. To do this, click the Start button in the bottom-left corner, then choose the desired application. If you don't see the one you want, select All Apps to see a full list of applications. In the example below, we're opening OneNote. Working with Files   You'l...

WHAT IS WINDOWS?  windows 1S an operating  system designed by Microsoft. The operating system is what allows you to use a computer like MS-Word, Wordpad, MS- Paint etc. Windows comes preloaded on most of the new personal computers (PCs), which helps to make it the  most popular operating system in the world. Windows makes it possible to complete all types of everyday tasks on your computer. For example, you can use Windows to browse the Internet, check vour email, edit digital photos, listen to music, play games, and do much  more. Microsoft released the first version of Windows in the mid-1980s. There have been many versions of Windows since then, but the most recent ones include Windows 10 (released in 2015), Windows 8 (2012),, Windows 7 (2009), Windows Vista (2007)  and Windows XP (2001). WHAT IS WINDOWS 7? Windows 7 is an operating system that Microsoft has produced for use on personal computers. It is the  follow-up to the Windows Vi...

Know  more about our Beautiful country, part 1 INDIA'S LOCATION - India is a big and beautiful country. Iti is isthe seventh largest country in the world in area and the second largest in population after China. India has 29 states and 7 union territories. The shape of India is like a kite. It is broad in the middle and narrow at the top and at bottom. India stretches for about 3,214 km from north to south and about 2,933 km from east to west.   The southern part of India is a peninsula. Tropic of Cancer (23°30') divides the country into almost two equal parts. India is surrounded by sea water on its three sides. The Arabian Sea is in the West, the Bay of Bengal is in the East and the Indian Ocean is in the South. The state of Jammu and Kashmir is placed like a crown on India's head. Kanyakumari is the southernmost tip of our main land. The length of the coastline of the land of India is about 7.517 km. India occup...

Keyboard - A keyboard is an important part of a compurter.It has many keys. We can type letters, numbers and symbols with the help of these keys. In standard keyboard, there are 104 keys. We can divide these keys in six different categories. 1. Alphabet Keys            2.Number Keys 3.Arrow Keys 4.Special character Keys 5.Function Keys 6.Special Keys Alphabet keys- Alphabet keys are 26 in number and marked with the letters of English alphabet. These keys are not arranged in sequences. we use alphabet keys to type words, sentences letters, etc. Facts-  Most keyboards are called QWERTY keyboards. This name comes from first six letters on the top row of the alphabet keys. Number Keys- Number keys are also called numeric keys. These numeric keys are 10 in numbers, marked with 0 to 9. Number keys are present at the two places on the keyboard: •On the top of the alphabet keys. •On the right end of the keyboard . Arr...

A mouse is a pointing input device attached to the computer with a long wire. It looks like a real mouse with a long tail and moves quickly on the screen. Mouse is use to point and select items on the computer screen. TYPES  OF A MOUSE- Computer mouse can be of different types.   1.Two-button Mouse _ It is a mouse with two-buttons_ left button and right button. 2.Three-button Mouse - It's a mouse with three buttons- left button,  middle button and right button . 3.Scroll Mouse - It is a mouse with left button, right button and a scroll wheel in the middle. We can move up and down a page by moving this wheel. 4.Ball Mouse- When we turn the ball mouse upside down, we find a ball a ball inside it. It allows to move in all directions easily. 5.Optical Mouse- The optical mouse has a red light under it.The optical mouse is better than the ball mouse. Mousepad- The proper way to place the mouse is on a mousepad.Just as we sit on chair, there is a s...

Today's computers come in many shapes and sizes. Here You can see main types of computer. Desktop  Computer - Many people use desktop computers at work, home and school. Desktop computers are designed to be placed on a desk, and they are typically made up of a few different parts ,including the CPU box, monitor, keyboard, and mouse.  Laptop Computer - The second type of computer you may be familiar with is a personal computer, commonly called a laptop. Laptops are battery-powered computers that are more portable than desktops, allowing you to use them almost anywhere. Tablet Computers- Tablet computer or tablets are handheld computers that are even more portable than laptops. Instead of a keyboard and mouse, tablets use a touch-sensitive screen for typing and navigation. The iPad is an example of a tablet.  Server- A server is a computer that serves up information to other computers on a network .For example, whenever you use the intern...

What is Computer - The computer is an electronic device that is used to store the data according to the given instructions, resulting in quick and accurate results. Computers can be used to solve money, watch movies, listen to songs, play games, paint and colorful pictures. The word comes from the word word, 'compute' which means to calculate CHARACTERISTICS OF A COMPUTER - Computer characteristics have made them so powerful and universally useful. Let's briefly discuss them. SPEED  - A powerful computer is capable of directing approximately 3-4 million simple seconds per second. Accuracy-  Computers are also accurate. Errors that can be almost always can be attributed to human errors (incorrect data, poorly designed systems or defective instructions / programs written by programmers). Diligence - Unlike removing humans, computers are very consistent. They are not suffering from human properties of boredom and exhaustion, resulting in lack of concentrat...

What is computer in Hindi -  कंप्यूटर एक इलेक्ट्रॉनिक डिवाइस है जिसका उपयोग डेटा को स्टोर करने के लिए किया जाता है, दिए गए निर्देशों के अनुसार यह परिणाम जल्दी और सटीक परिणाम देता है। कंप्यूटर का इस्तेमाल रकम को हल करने, फिल्में देखने, गाने सुनने, गेम खेलने, ड्रा और रंगीन चित्रों के लिए किया जा सकता है। शब्द कंप्यूटर गणना शब्द से आया है जिसका अर्थ गणना करना है। एक कंप्यूटर की विशेषताएं - कंप्यूटर की विशेषताओं ने उन्हें इतना शक्तिशाली और सार्वभौमिक रूप से उपयोगी बना दिया है। आइए उनको संक्षेप में चर्चा करें। Speed  -कंप्यूटर अविश्वसनीय गति से काम करते हैं। एक शक्तिशाली कंप्यूटर प्रति सेकंड लगभग 3-4 मिलियन सरल निर्देश करने में सक्षम है।  Accuracy (शुद्धता) - तेजी से होने के अलावा सटीकता, कंप्यूटर भी सटीक हैं। त्रुटियां जो हो सकती हैं लगभग हमेशा मानव त्रुटियों (गलत डेटा, खराब डिजाइन किए गए सिस्टम या प्रोग्रामर द्वारा लिखे गए दोषपूर्ण निर्देश / प्रोग्राम) के लिए जिम्मेदार ठहराया जा  सकता है। Diligence(लगन) -   मानव के विपरीत, कंप्...

Hello dosto aaj se yaha se aap 12th class  ka model paper download kar sakte hai. Jo ki Bihar board dwara jari kia gaya hai. Thanks for,  visiting here for downloading Biharboard 12th class model paper click below http://biharboardonline.bihar.gov.in/model-question-papers-ss