The control unit The control unit control everything that happens inside the computer it also features data from the memory sends it to a l u for processing and then send through the process the data back to the memory. all the Arithmetic and logical problems are solved in ALU (Arithmetic /Logic Unit),which is part of the computer.
Single user operating system Single user operating system easy in Shell version of operating system when the concepts of multithreading and multiuser work to be exploited properly this operating system can support only one user at a time the most popular single user operating system or Microsoft Windows 3.1, Microsoft Windows 95, Microsoft DOS.
Memory chips are used to in the memory to hold data and instructions Things to remember The system unit is the main part of the computer because CPU is placed inside it The motherboard is a printed circuit board or PCB where are all the electrical circuits are printed The power supply unit is a device which converts high voltage current to voltage current required by the components of PC Main memory determine the amount of data that can be stored in the computer as well as the amount of data that it can process
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