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What is internet? History of Internet • In 1969, the US Department of Defense started a project to allow researchers and military personnel to communicate with each other in an emergency. The project was called ARPAnet and it is the foundation of the Internet..In 1971 Ray Tomlinson made a system to send electronic mail. • in April of 1999, there were 92.2 million Internet users over the age of 16 in...
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April 18, 2016 evirtualguru_ajaygourOnline Computer EducationNo Comment
Network devices Without network devices our computers wouldn’t be able to connect to the internet as well as to other computers . It is thus very clear that these are very important devices and without them we cannot be able to work efficiently with our computers. Some network devices are given in the picture that are used to form a network. Where when we form a LAN then some devices...
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April 18, 2016 evirtualguru_ajaygourOnline Computer Education2 Comments
Advantages of Installing a Network in schools Connections– Administrators, instructors, and even students and guests can be connected using the campus network. Services-The school can provide services, such as registration, school directories, course schedules, access to research, and email accounts, and many others. (Remember, network services are generally provided by servers). Internet-The school can provide network users with access to the internet. Computing resources-A high quality printer that is installed in...
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April 18, 2016 evirtualguru_ajaygourOnline Computer EducationNo Comment
What is network? A network is two or more computers, or other electronic devices, connected together so that they can exchange data. For example a network allows computers to share files, users to message each other, a whole room of computers to share a single printer, etc. Let’s have look on network diagram. You can see many computers,server,printer are connected through cables for resource sharing. Why do our computer need network?...
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April 18, 2016 evirtualguru_ajaygourOnline Computer EducationNo Comment
The Java security model The Java security model, introduced in Java 2, is the basis of highly secured and distributed enterprise Java applications. The model is based on a customizable “sandbox” in which Java software programs can run safely, without potential risk to systems or users. Java security technology includes a large set of APIs, tools, and implementations of commonly used security algorithms, mechanisms, and protocols. The architecture of the Java...
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April 7, 2016 evirtualguru_ajaygourOnline Computer EducationNo Comment
Windows 7 system requirements If you want to run Windows 7 on your PC, here’s what it takes: Processor 1 gigahertz (GHz) or faster 32-bit (x86) or 64-bit (x64) processor RAM 1 gigabyte (GB) RAM (32-bit) or 2 GB RAM (64-bit) Storage 16 GB available hard disk space (32-bit) or 20 GB (64-bit) Explaining Different Explaining Different Windows 7 Editions Windows 7 is the successor to Windows Vista . Different versions...
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April 7, 2016 evirtualguru_ajaygourOnline Computer EducationNo Comment
Identifying Functionalities of Operating System An operating system is responsible for performing wide variety of tasks. Some of the most important tasks are: User interface File management Device management Memory management Process management Networking Security An important task of an operating system is to act as a mediator between the computer hardware and the computer user. It interacts with the computer hardware on behalf of the user. However to do so...
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April 7, 2016 evirtualguru_ajaygourOnline Computer EducationNo Comment
Operating System – A Brief Introduction What is an Operating System? A computer requires both hardware and software to operate. It cannot operate solely on the hardware. However, a computer is a dumb machine. It cannot operate on its own. It requires human interaction (user) for its operation. However, a computer user cannot interact directly with the computer hardware. He/She requires some kind of interface to interact with the computer’s hardware....
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April 7, 2016 evirtualguru_ajaygourOnline Computer EducationNo Comment
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