A laptop system consists of assorted hardware elements. every element plays a particular role in laptop system. These elements are interconnected to every different in such how in order that the pc will perform its functions. Processor: Processor is that the main element of a laptop system. It controls the operations of the pc and co-ordinates the opposite elements of the pc. It performs all the functions in keeping with the program directions. It decodes and executes the directions. it's thoufht-about the brain of the pc. It contains variety of special-purpose registers and Arithmetic Logic Unit (ALU). A modem laptop system consists of 1 or additional processors. When there's only 1 processor in an exceedingly laptop system, it's usually called the Central Processing Unit (CPU). Main Memory: Programs and information should be loaded into the most -memory of the pc before their execution. the most a part of operating system is additionally loaded into the most memory throughout booting method of the pc. the most memory, could be a temporary storage of the pc. Main memory is additionally called primary memory. If the pc is shutdown or power is suddenly cut-off, all data, programs and operating system are cleared from the memory. the info and programs are permanently stored on the secondary storage device (hard disk, CD-ROM, Tape etc.).
I/O Modules: I/O module is an electronic element. it's conjointly called I/O controller or controller devices. the info or program directions are moved between the pc and its external devices through I/O module. every I/O device (such as secondary storage communication equipments, and I/O devices etc.) has its own I/O module (or device controller), that is needed for communication between device and processor. It conjointly controls the I/O operations of the I/O devices. for instance, disk controller exchanges information between disk and processor. The processor writes and reads information to and from disk through disk controller. In some cases, the I/O module exchanges information directly between main memory and I/O device. In such case, the processor grants the authority to an I/O module to write down and skim information to and from the memory. For this purpose, the I/O module problems scan or write commands to memory. System Bus: A system bus is an electrical path. the info and command signals are communicated between the pc elements through bus. for instance, information is communicated between main memory, processor and I/O module through the bus.
I/O Modules: I/O module is an electronic element. it's conjointly called I/O controller or controller devices. the info or program directions are moved between the pc and its external devices through I/O module. every I/O device (such as secondary storage communication equipments, and I/O devices etc.) has its own I/O module (or device controller), that is needed for communication between device and processor. It conjointly controls the I/O operations of the I/O devices. for instance, disk controller exchanges information between disk and processor. The processor writes and reads information to and from disk through disk controller. In some cases, the I/O module exchanges information directly between main memory and I/O device. In such case, the processor grants the authority to an I/O module to write down and skim information to and from the memory. For this purpose, the I/O module problems scan or write commands to memory. System Bus: A system bus is an electrical path. the info and command signals are communicated between the pc elements through bus. for instance, information is communicated between main memory, processor and I/O module through the bus.
