"STAY HOME--STAY SAFE" FIGHT AGAINST COVID-19
Skip to main content

computer memory basics

computer memory


What is computer memory?

The CPU is called the brain of a computer, but while the human brain does a lot of work and protects our memories, the CPU only does arithmetic and logical calculations. Processes input data, process data cannot be protected because process data must now be stored in a safe place so that this task can be performed using computer memory (computer memory). Computer memory is divided into many small parts that we call cells. Each cell has a unique address or path. Whenever you save or save a file on a computer, it is saved in a cell -


There are two types of computer memory:

Variable - It is also called primary storage, also called primary storage. It is in direct contact with the CPU and its data and instructions are used quickly and directly by the CPU. This is called a variable memory because this memory cannot store any data permanently. Example - RAM
Non-volatile - This is known as secondary storage. It is used to permanently store a large amount of data, so the secondary storage is called storage. No storage examples - hard disk

There are four types of computer memory based on storage space -


  • Register memory
  • Cache memory
  • Main memory
  • Secondary storage

Computer storage device or unit - computer storage devices
Just as there are units such as seconds to measure time, decibels to measure noise, mm to measure distance, and grams to measure weight, units in the world of computers have been designed to measure memory capacity. Is it is called a unit or unit of computer memory -

The smallest unit of computer memory is a bit. A bit is a binary signal, ie a binary value of only 0 and 1, and when four bits are mixed, it is called a nibble. ) Means 1 nibble = 4-bit byte (byte) A group of 8 bits is called a byte.

When you type a number or letter into your computer, it is usually expressed as a byte or directly takes a space that corresponds to a byte. That is, 1 byte = 8 bits = 2 nibbles, so a group of about 11099511627776 weights is called terabytes, and about two million MP3s can be stored in one terabyte.
1 bit = 0, 1
4 bits = 1 nibble
8 bits = 1 byte
1000 bytes (bytes) = one kilobyte (KB)
1024 kilobytes (KB) = one megabyte (MB)
1024 megabytes (MB) = one gigabyte (GB)
1024 gigabytes (GB) = one terabyte (TB)
1024 terabytes (TB) = one pentite (PB)
1024 pedabytes (PB) = one exabyte (EB)
1024 exabytes (EB) = one zabyte (ZB)
1024 zetabytes (ZB) = one zetabyte (YB)
Labels:

Comments

Post a Comment

Popular posts from this blog

History of computer

History of computer Computer tech study:- History of computer It was difficult for humans to calculate from the start. Humans can only calculate or calculate to a limited extent without machines. In order to be able to perform many calculations, humans have to rely on the machine to meet this need. Built computers, that is, to calculate. Abacus - 3000 years ago Abacus was developed by Chinese scientists about 3,000 years ago. In a rectangular frame were wooden boards on iron bars, which were calculated or calculated from top to bottom. That said, it was the first computer to run without electricity. In fact, it was up to you to do this job. Antikythera system - 2000 years ago Antikythera was originally an astronomical calculator used to track solar and lunar eclipses in ancient Greece. Antikythera is approximately 2000 years old and was discovered by scientists in 1901 on a ship that was completely destroyed on the island of Antikythera. Acquired in a chronically dilapida...
Post a Comment
Read more

basic Computer architecture

Computer architecture 1- I nput unit Input units are the hardware parts of a computer that can be used to enter data into the computer. They use input devices such as keyboards, mice, etc. for input and the computer via software. Or instruct it to be called I / O devices 2- Central unit The central unit processes the input data. For this purpose, both the central processing unit and the computing unit carry out an arithmetic calculation and a logical calculation and process the data. The CPU is called the brain of the computer. 3- Memory Memory is the part of a computer that stores user input and process data. It has two types of primary and second data, e.g. B. RAM and hard drive. 4- Output unit Based on the command you specified, you receive the processed information from the output computer that is received by your output device or output device. The best example of an Out device is your computer monitor. It's called I / O devices.
Post a Comment
Read more