Central Processing Unit ( CPU )
The CPU or central processing unit is aimed to perform mathematical calculations faster that the humans beings. However this is complex machine, and performs many individual functions. This machine is designed to achieve many goals and purposes. CPU is basically divided into three main parts control unit, arithmetic logic unit and registers.
Let us analyze briefly about the functioning and design of cpu.
Some Basic Goals
The main objective of the CPU is to perform mathematical calculations on binary numbers; still there are other goals of using CPU as well. It can provide high throughput for multiple programs. It is aimed to consume less power with better performance. It provides viable connectivity to develop more advance and parallel systems. The cost is less and the performance is more. It can be redesigned and converted to small size, in order to increase the performance of the system, lower the cost and increase the speed of the system. It can provide very good compatibility with very large scale integrated circuits. Which helps in compressing the transistors on one chip and hence the speed of system is enhanced. This is because tiny transistors switch in a fast and swift manner. The early designs of CPU were based on clock rate however today microelectrical designs are more popular.
Key CPU Gears
CPU is the central working unit for any computer however it is designed to perform various functions. The main focus of the CPU is on the areas such as control units which further manages the data paths, it also monitors cache and registers, it helps in managing clock distribution management, performs Pad transceiver circuitry and the supervision of logic gate cell library the popularly used logic styles include microprogramming, finite state machines and programmable logic array. The CPU can be customized or cannot be. The CPU which is designed for commercial purposes is build to achieve high frequency with low power indulgence and high speed.
Main Design of CPU
CPU is a complex design which is comprised of many hardware components like motherboard and circuits. This machine works by receiving set of instructions, logic gates are used to execute and follow the set of instructions. This set of instructions is commonly known as a program. The representation of numbers in a processor is based on the design of the CPU. The early design of the CPU allowed only numeral and decimal system to represent the numbers. However the design of the modern CPUs allows them to present numbers in binary form. The performance of the CPU is dependent upon the clock rate. The working and design CPUs mostly is based on the synchronization of the signal. This signal is usually known as clock signal helps in determining the movement of the electrical signal to the circuits of the CPU. The designers use it to determine the correct period of the clock signals. Besides the logical working the structure of the CPU has control unit, logical unit and registers. There are number of registers in a CPU like program counter, instruction register, accumulator and process status register. The control unit is helpful in managing instructions and flow of data within the parts of the computer. It also helps in regulating the time of the processing. The design and working of the arithmetic logic unit is complicated. It is ALU which helps the CPU to perform calculations and take logical decisions. The registers have their own assigned duties to perform like the accumulator stores ultimate and midway results of the calculation. His magic machine is small in size, complex in design but is really powerful and swift.