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MEMORY - Coggle Diagram
MEMORY
TYPE OF MEMORY
VOLATILE MEMORY
VOLATILE MEMORY LOSES ITS CONTENTS WHEN THE POWER IS TURNED OF
VOLATILE IS TEMPORARY
EXAMPLE OF VOLATILE MEMORY: RANDOM ACCESS MEMORY (RAM)
CALLED MAIN MEMORY
CAN BE READ FROM AND WRITTEN TO BY PROCESSOR
HOLDS DATA OR PROGRAMS THAT ARE CURRENTLY BEING USED BY THE PROCESSOR
TYPE OF RAM
SRAM(STATIC RAM)
CHIPS DO NOT HAVE TO BE REENERGIZED MAKE IT FASTERTHAN DRAM
EXPENSIVE THAN DRAM
DRAM(DYNAMIC RAM)
CHIPS MUST BE REENERGIZED CONSTANTLY
MRAM(MAGNETORISISTIVE RAM)
STORES DATA USING MAGNETIC CHARGES INSTED OF ELECTRICAL CHARGES
NON-VOLATILE MEMORY
NON VOLATILE MEMORY DOES NOT LOSE ITS CONTENTS WHEN THE POER IS TURN OFF
NON VOLATILE IS PERMANENT
EXAMPLES OF NON VOLATILE MEMORY
READ-ONLY MEMORY(ROM)
PROM (PROGRAMMABLE ROM)
A BLANK ROM CHIP WHICH ALLOWS PROGRAMMER TO WRITE PERMANENTLY
EPROM(ERASABLE PROGRAMMABLE ROM)
ALLOW PROGRAMMER TO ERASE THE CONTENTS BY EXPOSING TO ULTRAVIOLET LIGHT
EEPROM(ELECTRICALLY ERASABLE PROGRAMMABLE ROM)
ALLOW PROGRAMMER TO ERASE THE CONTENTS WITH AN ELECTRICAL SIGNAL
FLASH MEMORY
CMOS
DEFINITION
CONSISTS OF ELECTRONIC COMPONENTS THAT STORE INSTRUCTIONS WAITING TO BE EXECUTED BY THE PROCESSOR
FUNCTIONS OD MEMORY
TO STORE DATA AND INSTRUCTIONS WAITING TO BE EXECUTED BY THE PROCESSOR AND THE RESULTS OF PROCESSINGTHE DATA (INFORMATIONS)