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A computer network is a group of computers that use a set of common communication protocols over digital interconnections for the purpose of sharing resources located on or provided by the network nodes.
- Sharing devices such as printers saves money.
- Site (software) licences are likely to be cheaper than buying several standalone licences.
- Files can easily be shared between users.
- Network users can communicate by email and instant messenger.
- Security is good - users cannot see other users' files unlike on stand-alone machines.
- Data is easy to backup as all the data is stored on the file server.
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essentially there are 4 layers here that will help you understand this
- Hardware
- Firmware
- System software
- Applications
So basically the H/W and System software(OS) interact with each other through an entry point (boot code/bootstrapping)) that is in the form of Firmware(on-boarded on the H/W itself and/or through device drivers).
This inter-dependability is developed in order for the hardware to perform operations to the commands passed by the System software.
Now applications usually make requests to the System software to help it perform a task using a hardware component.
To understand this better I’ll provide you with a high level example here of Printing.
So You have a Word doc in place to be printed.
The Hardware Printer has its onboard firmware as well as a device driver in your Systems memory( your CPU) to connect these both. Now the System Software is directly in contact with the device driver and knows that if a print command is requested by some application(in our case MS word) then I have to use this device driver code as an entry point to communicate with the printer.
So this is the flow of that operation:
- You click on Print option
- MS-Word makes a request to the System Software(say Windows) to inform of a print command to be executed on its ‘be-half’ by the system software
- The system software uses the device driver code to forward that request to the printer
- The printer’s on-board firmware understands the incoming request and data (your file to be printed) and does the required Job.
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Preeti Dabral 3 years, 4 months ago
The communication cycle is the process by which a message is sent by one individual, and it passes through a chain of recipients. The timing and effectiveness of a communication cycle is based on how long it takes for feedback to be received by the initial sender.
Posted by Ansh Mishra 3 years, 4 months ago
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An application program is a computer program designed to carry out a specific task other than one relating to the operation of the computer itself, typically to be used by end-users. Examples of an application include a word processor and a media player. The collective noun refers to all applications collectively.
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Preeti Dabral 3 years, 4 months ago
The computer brain is a microprocessor called the central processing unit (CPU). The CPU is a chip containing millions of tiny transistors. It's the CPU's job to perform the calculations necessary to make the computer work -- the transistors in the CPU manipulate the data.
Posted by Aman Tiwati 3 years, 5 months ago
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Preeti Dabral 3 years, 5 months ago
Self-awareness involves being aware of different aspects of the self including traits, behaviors, and feelings. Essentially, it is a psychological state in which oneself becomes the focus of attention. Self-awareness is one of the first components of the self-concept to emerge.
Posted by Anchal Singh 3 years, 5 months ago
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Preeti Dabral 3 years, 5 months ago
The basic elements of an HTML page are:
- A text header denoted using the tags.
- A paragraph denoted using the tag.
- A horizontal ruler denoted using the tag.
- A link denoted using the (anchor)tag.
- A list denoted using the unordered list, ordered list, and list element tags.
- An image denoted using the tag.
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