Learn With Computer 7TH STD
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INTRODUCTION TYPES OF MEMORIES FLOPPY DISK HARD DISK CD ROM
INTRODUCTION The Memory of a Computer holds stores program instructions what to do , data information , operands affected, manipulated, or operated upon data , and calculations ALU results . The CPU controls the information stored in memory. Information is fetched, manipulated under program control and or written or written back into memory for immediate or later use. The internal memory of a computer is also reffered to as main memory, global memory, main storage, or primary storage. Do not confuse it with secondary or auxiliary memory also called mass storage provided by various peripheral devices.
The storage capacity of memory is shown below 8 bits 1024 Bytes 1024 KB 1024MB 1024GB
1Byte 1 Kilo Byte KB 1 Mega Byte MB 1 Giga Byte GB 1 Tera Byte TB
MAINLY THERE ARE 2 TYPES OF MEMORIES 1 PRIMARY MEMORY 2 SECONDARY MEMORY
PRIMARY MEMORY Primary Memory is the only one directly accessible to the CPU. The CPU continuously reads instructions stored there and executes them as required. Any data actively operated. It is also stored there in uniform manner.
Random Access Memory RAM Read Only Memory ROM .