John von Neumann :: Computer Science

John von Neumann----------------Von Neumann, a mathematician knowing the architecture modelfor a central processor. This model was a single entrepot structure to hold both theset of instructions on how to discharge the computation and the datarequired or generated by the computation.He knowing it by treating the instructions in the same way as thedata, a stored-program machine can easily change the instructions. Inother terminology the machine is reprogrammable.Von Neumanns archtectre is still used it todays modern mainframeS.The CPU-------This diagram represents the structure of the Central ProcessingSystem.Arithmetic system of logic Unit---------------------The ALU performs addition and subtraction, logic operations, masking,and shifting (multiplication and division). train Unit------------The Control Unit is the heart of the computer. It controls andco-ordinates the systems operations. This contains the system clock,program counter and the instruction biography. It in li ke manner manages thesignals from the control bus.Registers---------This is a form of high-speed memory which is contained inside of theCPU. on the whole data must be represented in a register before it can beprocessed. Information is stored temporarily in the registers in whichtext or buffer positions or rectangles can be rescue for later use.Buses-----A bus is a channel or cartroad between the components in a computer.Having a high-speed bus is important. A bus lets you connect computerscomponents to the processor.The advantage of a bus is that it makes parts much interchangeable. Ifyou want to get a better graphics card, you simply disconnect the old cardfrom the bus and plug in a fresh one. If you want two monitors on yourcomputer, you plug two graphics cards into the bus. And so on.A PC usually has two buses. The first connects the CPU and the systemmemory. This is the fastest bus in the system. The second bus is the laggard and it connects other devices, like the hard dis k, CD drive,