The Structure and the Functions of a Computer
All the components of a computer are connected to the main board. Also, you can find more elements on the main board, such as the sound board, the operative memory, the network board, the processor and the modem. These components can be divided in the following groups: input units, output units and the processing unit. The input and the output units can be attributed to separate groups because the components these components are part of can both receive and distribute the information.
The processing unit is a system of components which the other components depend on. This processing unit of a computer gathers all the main features on the system, such as the processing speed, which determines the number of operations the computer does in a minute. The operative memory is another very important aspect of your computer. The amount of information memorized in the computer depends on the capacity of the operative memory also known as RAM memory. This information is meant to process the current data and the intermediate information in this memory. This way, the information is available as long as the computer is connected. The operative memory also contains the operating system which cannot be accidentally erased.
You need to get a bigger memory if you want to have a better operating system. This is why you have the ROM memory. Its capacity allows you to keep larger amounts of information as long as necessary, without being restricted by the computer in any way. This way, it doesn’t matter if your computer is disconnected as it will still keep the information stored on it. The capacity of the memory is measured in by, kilobytes, megabytes and gigabytes.
The software of a computer is the logical part, including the programs which ensure us a well-functioning of the computer. The software is formed of the operating system and the application programs. The main cause for the appearance of the operating system is the necessity to execute the elementary operations for the administration of the resources of the computer. These operations are low-level ones. It is impossible for a practical user to perform the hundreds of elementary operations in order to achieve the result they want to achieve. Thus, you can say that an operating system can be associated with an assistant translator which translates the correspondence between the hardware of a computer and the user themselves.
An operating system is a collection of programs which administrate the resources of a computer and which ensures their efficiency. This operating system also makes the connection between the logical components of a computer and the physical ones. These programs lead to the entire activity of a computer, they assist the user and they coordinate the programs and the applications. These systems are addressed to users and administrators, the operating systems used by the more experienced users being much more secure. Thus, you have all kinds of Windows versions, but there are also operating systems such as Windows NT, Linux or Free BSD.