3. WHAT IS STORAGE & MEMORY ?
STROAGE
Provide capacity for all the files and information.
MEMORY
provide working space.
4. OVERVIEW
Primary
Necessary to run the computer.
storage of intermediate data.
Ram cache
secondary
Long term storage of data.
HDD
Tertiary
Cd DVD memory card.
5. MAIN MEMORY TWO TYEPS
RAM
Main memory is sometimes called RAM. RAM stands for Random Access Memory. “
Random means that memory cell can be accessed any orer.
Rom
Rom is read only memory.
6. The following are two common types of RAM:
•SRAM: Static random access memory uses multiple
transistors, typically four to six, for each memory cell but
doesn't have a capacitor in each cell. It is used primarily
for cache.
•DRAM: Dynamic random access memory has memory
cells with a paired transistor and capacitor requiring
constant refreshing.
•Also fpm dram , edo d ram, cmos ram, vram.
•Rom
•P rom
•E rom
•Ep rom
7. Cache memory
Cache memory, also called CPU memory, is random access memory (RAM) that a computer microprocessor can
access more quickly than it can access regular RAM. This memory is typically integrated directly with
the CPU chip or placed on a separate chipthat has a separate bus interconnect with the cpu.
