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कंप्यूटर एक नवीनतम तकनीक है जो ज्यादातर
जगहों पर इस्तेमाल किया जाता है। ये कम
समय लेकर ज्यादा से ज्यादा कार्य को संभव
बनाता है। ये कार्यस्थल पर व्यक्ति के श्रम
को कम कर देता है अर्थात कम समय और कम
श्रम शक्ति उच्च स्तर का आउटपुट प्रदान करता
है। आधुनिक समय में बिना कंप्यूटर के जीवन एक
कोरी कल्पना सी है। हमलोग कंप्यूटर में इंटरनेट
का इस्तेमाल कर सकते है जो बेहद कम समय में
जरुरी जानकारी उपलब्ध कराता है। व्यक्ति
के जीवन में इसका बड़ा योगदान है क्योंकि
इसका प्रयोग अब हर क्षेत्र में है और ये हर क्षण
हमारे सहायक के रुप में मौजूद रहता है। पुराने
समय के कंप्यूटर कम प्रभावशाली तथा कार्य
सीमित था जबकि आधुनिक कंप्यूटर बेहद
क्षमतावान, संभालने में आसान तथा ज्यादा
से ज्यादा कार्यों को संपादित कर सकते है।
भावी पीढ़ी के कंप्यूटर और प्रभावी होंगे
साथ ही कार्यात्मक क्षमता भी बढ़ती
चली जाएगी। इसने हम सबके जीवन को आसान
बना दिया है। इसके माध्यम से हम कुछ भी
आसानी से सीख सकते है तथा अपने हुनर को
और निखार सकते है। हमलोग चुटकियों में
किसी भी सेवा, उत्पाद या दूसरी चीजों के
बारे में जानकारी प्राप्त कर सकते है। कंप्यूटर में
लगे इंटरनेट के द्वारा हम कुछ भी खरीदारी कर
सकते है जिससे घर में बैठे-बैठे मुफ्त डिलिवरी
प्राप्त कर सकते है। इससे हमारे स्कूल प्रोजेक्ट में
भी खूब मदद मिलती है।
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A computer is a machine ( mostly electronic) that is able to take information (input), do some work on or make changes to the information (process), to make new information (output). Computers have existed for much of human history. Examples of early computers are the astrolabe and the abacus. There are four main processing steps in a computer, and they are: inputting, outputting storage and processing. These four steps help the computer to work.

Modern computers are very different from early computers. They are now very powerful electronic machines that are able to do billions of calculations per second. Most people have used a personal computer in their home or at work. Computers are useful for many different jobs where automation is useful. Some examples are controlling traffic lights, vehicle computers, security systems, washing machines and digital televisions.

A computer user can control it by a user interface. Input devices include keyboard, mouse, buttons, touch screen. Some very new computers can also be controlled with voice commands or hand gestures or even brain signals through electrodes implanted in the brain or along nerves.

Computers can be designed to do almost anything with information. Computers are used to control factories, which in the past were controlled by humans. They are also in homes, where they are used for things such as listening to music, reading the news, and writing.

Modern computers are electronic machines. A computer is only useful if it has both hardware and software. Hardware is the physical parts the computer is made of - for example keyboard, mouse, screen, tower, and the circuits inside it. Software is the computer programs (mathematical instructions). The software uses the hardware, when the user gives it instructions and changing it in to useful output.

Many modern computers do billions of calculations each second. They do mathematical arithmetic very quickly but computers do not really "think". They only follow the instructions in their software programs.

Computer programs are designed or written by computer programmers. A few programmers write programs in the computer's own language called machine code. Most programs are written using a programming language like C++, Java, and Python. These programming languages are more like the language you talk and write with every day. A program called a compiler translates the user's instructions into binary code (machine code) that the computer will understand and do what is needed.

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