COMPUTER MEMORY
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Computer memory is any physical device capable of storing information temporarily or permanently. There are two types of computer memory Primary Memory or Main Memory whicn include RAM (Random Access Memory) & ROM (Read Only Memory) and Secondary Memory or Auxiliary Memory which include Magnetic Disk, Magnetic Tape, Optical Disk etc.
Primary Memory Random Access Memory (RAM) - is a type of volatile memory that is stores information on an integrated circuit which hold the data mainly when the program is beaing executed by the CPU. As it is volatile in nature so it cann't store data permanently. Read Only Memory (ROM) - a non-volatile memory chip in which data are stored permanently, and cannot be altered by the programmer. Secondary MemoryA storage, which suppliments the main memory of a computer. Often reffered to to as secondary storage, this section of computer's memory is non-volatile and has low cost per bit stored, but it generally has an operating speed far slower than that of the primary storage. Cache MemoryA small high speed memory, which is used to increase the speed of processing by making current programs and data available to the CPU at a rapid rate. |
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