Bihar board 12th model paper 2019 pdf download

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.
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for downloading Biharboard 12th class model paper
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http://biharboardonline.bihar.gov.in/model-question-papers-ss

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More about computer keyboard

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...

More about Mouse,types of mouse

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...

Generation of Computers In Hindi

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