What is a Central Processing Unit (CPU)?
1 What is a Central Processing Unit (CPU)?2 RAM (Random Access Memory)3 What is the relationship between CPU and RAM?3.1 Features of CPU (Central Processing Unit)3.2 Features of RAM (Random access memory)
The CPU is a part of the hardware that carries forwards the instructions of a computer program. It is trained to perform basic functions like arithmetic, logic and input/outfit operations in the computer system. In the computer, every instruction goes through the CPU, it doesn’t matter how small it is. A CPU has multiple components which perform different work. It has an arithmetic logic unit which has a responsibility to perform simple arithmetic and logical tasks. It also contains a control unit that handles the various parts of the computer. It has the responsibility to read and interprets instructions from memory and convert them into a series of signals to start operations of the other computer parts. The control unit also calls the arithmetic logic unit to perform the necessary calculations from time to time. In the CPU operations, cache memory is used which is high-speed memory where instructions can be copied and retrieved quickly. The CPU contains at least one processor, which is the actual chip inside the CPU that performs calculations. A CPU with two processing cores is called a dual-core CPU and models with four cores are called quad-core CPUs. High-end CPUs may have six (hexa-core) or even eight (octo-core) processors. A computer may also have more than one CPU, which each have multiple cores.
CPU is considered as the brain of the computer.CPU performs all types of data processing operations.It stores data, intermediate results, and instructions (program).It controls the operation of all parts of the computer.
RAM (Random Access Memory)
RAM also know as computer memory unit is that part of the computer hardware which handles all the memory and caching related operations of the processor. It has two separate registers that are managed by the CPU’s control unit. A data to be sent to main memory or retrieved from memory is stored in the Memory Data Register (MDR). The desired logical memory address is stored in the Memory Address Register (MAR). The address translation is also known as address binding and it uses a memory map which is programmed by the operating system. The two main types of RAM are:
Dynamic Random-Access Memory (DRAM)Static Random-Access Memory (SRAM)
The difference between the two are in how they refresh, or speed. SRAM is faster because DRAM needs to refresh quite often (thousands of times per second) whereas SRAM doesn’t. In terms of seconds, DRAM gives access times of about 60 nanoseconds. SRAM does the same in 10 nanoseconds. Since the speed difference is so great, one would expect SRAM to be the most common type of RAM, but it’s not because it’s quite expensive.
What is the relationship between CPU and RAM?
When a computer system performs certain task like rendering the video for a game or calculating numbers to add in the spreadsheet, then the certain series of instructions are needed to be processed by the central control unit. The number of instructions run by the processor can be measured in the megahertz which means millions or billions of instructions can be processed per second. Numerous modern processors have multiple cores nowadays, that means sub parts which are capable of running different programs and components of the programs in the parallel line. On the other hand, to smoothly run operations, most of the programs required a certain amount of memory to store the working data. The data can rotate back and forth on the disk, but that takes lots of time and can slow down the efficiency of the program. It can reduce the performance of the program drastically. So, this process of central processing unit and memory clearly defines that to smoothly run the operations of a computer system – compatible CPU and memory are required.
Features of CPU (Central Processing Unit)
Features of RAM (Random access memory)
Conclusion It is clear as daylight that CPU and memory are an integral part of the computer system. They both are highly important for the working of electronic gadgets. They might have different features, but their functioning is interlinked. So, when you are purchasing a new gadget, then make sure that the central processing unit and memory both are powerful.
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