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LA RAM
La memoria ad accesso casuale (abbreviazione diffusa nel linguaggio comune:
"RAM", acronimo di Random Access Memory) è una tipologia di memoria
informatica caratterizzata dal permettere l'accesso diretto a qualunque indirizzo
di memoria con lo stesso tempo di accesso.
La memoria ad accesso casuale si contrappone alla memoria ad accesso
sequenziale e alla memoria ad accesso diretto rispetto alle quali presenta tempi
di accesso sensibilmente inferiori motivo per cui è utilizzata come memoria
primaria.
La tipologia di memoria ad accesso casuale più comune attualmente è a stato
solido, a lettura-scrittura e volatile, ma rientrano nella tipologia di memoria ad
accesso casuale la maggior parte delle tipologie di ROM (inteso nell'accezione
più comune e non come memoria a sola lettura), la NOR Flash (una tipologia di
memoria flash), oltre a varie tipologie di memorie informatiche utilizzate ai
primordi dell'informatica e oggi non più utilizzate come ad esempio la memoria
a nucleo magnetico.
Esclusivamente l'acronimo RAM (non il termine "memoria ad accesso
casuale") ha anche una seconda accezione più ristretta ma attualmente più
diffusa secondo cui la RAM è una memoria ad accesso casuale della tipologia
più comune cioè a stato solido, a lettura-scrittura e volatile.

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Ram

  • 1. LA RAM La memoria ad accesso casuale (abbreviazione diffusa nel linguaggio comune: "RAM", acronimo di Random Access Memory) è una tipologia di memoria informatica caratterizzata dal permettere l'accesso diretto a qualunque indirizzo di memoria con lo stesso tempo di accesso. La memoria ad accesso casuale si contrappone alla memoria ad accesso sequenziale e alla memoria ad accesso diretto rispetto alle quali presenta tempi di accesso sensibilmente inferiori motivo per cui è utilizzata come memoria primaria. La tipologia di memoria ad accesso casuale più comune attualmente è a stato solido, a lettura-scrittura e volatile, ma rientrano nella tipologia di memoria ad accesso casuale la maggior parte delle tipologie di ROM (inteso nell'accezione più comune e non come memoria a sola lettura), la NOR Flash (una tipologia di memoria flash), oltre a varie tipologie di memorie informatiche utilizzate ai primordi dell'informatica e oggi non più utilizzate come ad esempio la memoria a nucleo magnetico. Esclusivamente l'acronimo RAM (non il termine "memoria ad accesso casuale") ha anche una seconda accezione più ristretta ma attualmente più diffusa secondo cui la RAM è una memoria ad accesso casuale della tipologia più comune cioè a stato solido, a lettura-scrittura e volatile.