What is the control register?

Although the primary memory on the computer is a random access memory (RAM), which is generally connected to the motherboard and connected to the computer processor, RAM is not the only type of memory on the computer. The medium processing unit (CPU) also contains a limited amount of storage, allowing data to move very quickly. These places are known as registers. The control register on the computer is the type of registry that controls or changes the basic behavior of the computer processor.

think about the control register as a small CPU socket that the computer has access to much more easily than other memory location in the system. By placing the control register on the physical CPU, DIE eliminates latency and increases the speed of access to a much higher value than other places in the system. So the computer uses it for the most important CPU tasks to keep the computer smoothly and efficiently.

Without a control register, the CPU could only store data by sending it via the front side bus (FSB) to RAM. In addition, it could load data onlyBy pulling them back from the memory via the front side bus. Although this might sound trivial, the front of the bus band - the maximum amount of data that can carry at the same time - is relatively limited. With thousands of pieces of data passing every second, this would quickly become a serious narrow point for computer, creating delay and interrupting the flow of basic operations. The use of the control register means that data must hardly travel at all: it is the difference between placing something in a socket where it is close to hand, and storing in the mailbox at the end of the driveway.

Primary use for the control register includes checking, paging, addressing and functionality of Coprocessor. The interruption occurs when the hardware device on the Computer sends a "emergency" signal to the CPU and requires to drop what is currently doing in favor of solving a particular problem. Addressing concerns the finding and use of physical addresses on the RAM system, obtaining and storing information for the computer. Paging gave themMemory management technique in which the information is stored in the "page file" located on the hard disk. The coprocessor is used to add CPUs, handling graphics information and other operations such as arithmetic with moving point and encryption.