Memory (memory)
It stores the instructions received by Device Input Device in the computer where it also goes to the memory of Computer. In humans, there are many things to remember, in the same way computer has memory to remember the data. This memory is an integral part of C.P.U. It is also called main memory of Computer, Internal Memory, or Primary Memory.
"Storage of any instructions, information, or results is called storage."
If there is more than one memory in computers, we can generally classify it as Primary and Secondary memory. The primary memory is both volatile and non-volatile. Temporary Memory keeps the data from being temporarily computer-to-computer until computer closes, that means the data is destroyed from the computer when the computer suddenly stops or goes to power. Permanent Memory starts your computer Are helpful in doing this. There are some very useful firmware that helps the computer to boot. The process of starting a booting computer is called main memory. Secondary storage is one that keeps our data for a long time. Secondary storage comes in many forms. Floppy disk, hard disk, cd Etc.
Types of Memory
Primary Memory
Secondary Memory)
Primary Memory
Memory is the most important part of the computer where data, information, and programs are present during the process and available immediately if required. This memory is unstable memory because the data written in it erodes when the computer is switched off or the electricity Primary Memory is called. It is also called primary memory or main memory.
Primary Memory is mainly of two types -
- RAM
- ROM
1. RAM (Random Access Memory)
RAM or Random Access Memory computers have Temporary Memory. Data inputted from key-board or any other input device is stored prior to the process and the CPU is stored. According to the requirement, the data or program in the RAM is stored temporarily in the RAM, when the computer is switched off or if the system is lost, the data stored in the RAM is erased. Therefore RAM is called Volatile or Temporary Memory. RAM has many capacities or sizes such as 4 MB, 8 MB, 16 MB, 32 MB, 64 MB, 128 MB, 256 MB etc. RAM is of three types.
- Dynamic RAM
- Synchronous RAM
- Static RAM
Dynamic RAM
Dynamic RAM is briefly called DRAM. The most common DRAM in RAM is required and it is necessary to refresh it quickly. Refresh means here is to make the chip a disadvantage, it refreshes almost thousands of times in a second and due to being refreshed every time it erases the subject matter first, due to its rapid refresh, its speed Are less.
Synchronous RAM
Synchronous RAM is faster than DRAM. The reason for its fast pace is that it is the CPU. The clock is refresh according to the speed. That is why they transfer data faster than the DRAM.
Static RAM
Static RAM is a RAM which is less refreshing. Due to low refresh, this keeps data in memory longer. S-RAM is faster and more expensive than DRAM.
- ROM (Read only memory)
The full name of Rome is Reed Online Memory. This is Permanent Memory which is programmed to store at the time of computer creation. Store programs can not be converted and destroyed in this storage, they can be read only. So this memory is called read only memory. Data stored in Rome is not destroyed even after the computer has switched off. Hence Rome is called non-volatile or permanent memory. There are different types of Rome which are the following -
- PROM (Programmable Read Only Memory)
- EPROM (Erasable Programmable Read Only Memory)
- EEPROM (Electrical Programmable Read Only Memory)
PROM
PROM's full name is Programmable Read Only Memory. It is such a memory that once the data is stored, it can not be deleted or changed.
EPROM
The full name of EPROM is Erasable Programmable Read Only Memory. It is similar to the PROM, but the stored program can be erased by ultra-violet rays and the new program can be erased. Can be done.
EEPROM
The full name of EEPROM is Electrical Programmable Read Only Memory. A new technology is also EEPROM, in which the program can be erased from the lawful method of memory.
Bit or byte
The data stored in the memory is converted to 0 or 1, 0 and 1 are jointly called binary digits. In essence they are also called bits. This bit computer is the smallest unit to measure the space occupied by memory.
8 Bits = 1 Bytes
1024 Bytes = 1 Kilobyte (1 KB)
1024 KB = 1 Megabyte (1MB)
1024 MB = 1 Gigabyte (1 GB)
1024 GB = 1 Terabyte (1 TB)
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