A short History of computer and computing

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.

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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

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...

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