Computer memory and it's types
- 1. COMPUTER MEMORY TAGORE GOVERNMENT COLLEGE OF EDUCATION PRESENTED BY PRIYANKA MAHAKUR B.Sc. B.Ed. III YEAR
- 2. WHAT IS COMPUTER MEMORY? Computer memory is any physical device, used to store data, information or instruction temporarily or permanently. It is the collection of storage units that stores binary information in the form of bits.
- 3. FEATURES OF MEMORY • Location: It represents the internal or external location of the memory in a computer. • Capacity: It is the most important feature of computer memory. Storage capacity can vary in external and internal memory. • Access Methods: Memory can be accessed through four modes of memory. 1. DMA (Direct Memory Address ) 2. Sequential Access Method 3. Random Access Method 4. Associative Access Method
- 5. PRIMARY OR MAIN MEMORY Primary memory is also known as the computer system’s main memory that communicates directly within the CPU, Auxiliary memory and the Cache memory. Main memory is used to kept programs or data when the processor is active to use them. The primary memory is further divided into two parts: RAM (Random Access Memory) 1. ROM (Read Only Memory)
- 6. Random Access Memory (RAM) is one of the faster types of main memory accessed directly by the CPU. It is the hardware in a computer device to temporarily store data, programs or program results. 1.RAM(Random Access Memory)
- 7. TYPES OF RAM • DRAM: DRAM (Dynamic Random-Access Memory) is a type of RAM that is used for the dynamic storage of data in RAM. In DRAM, each cell carries one-bit information. The cell is made up of two parts: a capacitor and a transistor. • SRAM: SRMA (Static Random-Access Memory) is a type of RAM used to store static data in the memory. It means to store data in SRAM remains active as long as the computer system has a power supply. However, data is lost in SRAM when power failures have occurred.
- 8. ROM is a memory device or storage medium that is used to permanently store information inside a chip. It is a read-only memory that can only read stored information, data or programs, but we cannot write or modify anything. 2.ROM (Read Only Memory)
- 9. There are five types of Read Only Memory: 1. MROM (Masked Read Only Memory): MROM is the oldest type of read-only memory whose program or data is pre-configured by the integrated circuit manufacture at the time of manufacturing. TYPES OF ROM
- 10. 3. EPROM (Erasable and Programmable Read Only Memory): It is the type of read only memory in which stored data can be erased and re-programmed only once in the EPROM memory. 2.PROM (Programmable Read Only Memory): It is a type of digital read-only memory, in which the user can write any type of information or program only once.
- 11. 5.Flash ROM: Flash memory is a non-volatile storage memory chip that can be written or programmed in small units called Block or Sector. 4.EEPROM (Electrically Erasable and Programmable Read Only Memory): The EEROM is an electrically erasable and programmable read only memory used to erase stored data using a high voltage electrical charge and re- programmed it.
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