Random Access Memory es un acrónimo de la frase “ RAM ”. Es una especie de memoria que requiere una fuente continua de electricidad para mantener los datos almacenados en ella. Esto implica que si la fuente de alimentación de la computadora portátil o PC se interrumpe ( se apaga ), los datos guardados en este sentido siguiente se verán comprometidos. La RAM se clasifica en dos tipos: SRAM y DRAM.
SRAM vs DRAM
La principal diferencia entre SRAM y DRAM es que la construcción y el diseño de SRAM son bastante difíciles. Esto se debe al hecho de que implementa su rendimiento utilizando múltiples tipos de transistores. Si bien DRAM es muy fácil de adoptar debido a su naturaleza directa. Otra distinción es que, a pesar del complicado diseño de SRAM, sus módulos son más simplistas que los módulos DRAM.
SRAM es un tipo de semiconductor. Es común en microprocesadores, potentes operaciones computacionales y dispositivos eléctricos. El SRAM es volátil, lo que significa que cuando se apaga la alimentación, se borran todos los datos contenidos en él. SRAM está compuesto de chanclas. Se compone de 4-6 transistores y una vez que el flip flop se registra un poco, se mantiene conservado hasta que se mantiene el bit equivalente.
DRAM es una forma de RAM que mantiene cada bloque de detalle ( 0 o 1 ) en un módulo de memoria. Las celdas de memoria están formadas por dos componentes, un pequeño condensador y un transistor, los cuales se basan en la innovación ( MOS ). El término “ Dinámico ” se adopta ya que el estado de DRAM varía de 0 a 1 con el tiempo debido a la pérdida gradual de energía de los condensadores.
Tabla de comparación entre SRAM y DRAM
Parámetros de comparación SRAM en las divisiones de caché L3 y L2 de la CPU Opera como memoria primaria Tamaño 1 MB a 16 MB1 GB a 2 GB y 4 GB a 16 GB para computadoras portátiles
SRAM significa Memoria estática de acceso aleatorio. La frase se pronuncia “ S-RAM ” en lugar de “ sram. ” SRAM es una forma de memoria semiconductora que almacena cada bit utilizando circuitos de bloqueo automático bistables.
Almacena bits a través de chanclas. Cada flip flop tiene 4-6 transistores. El bloque de almacenamiento de seis transistores se utiliza para procesar información en este tipo de RAM. La RAM estática se implementa principalmente como una memoria caché del procesador ( CPU ).
Se sabe que SRAM es más rápido para acceder y realizar actividades como lectura y escritura. Los datos se pueden recuperar en cualquier momento. Es más rápido que DRAM ya que no necesita actualizarse regularmente.
Puede proporcionar tiempos de acceso de tan solo 10 nanosegundos. Sin embargo, debido a que SRAM requiere más hardware y conexiones, una celda SRAM requiere más espacio en un chip que una celda DRAM.
SRAM requiere poder continuo para mantener su estado de carga y, por lo tanto, es volátil. También tiene dos inversores de acoplamiento cruzado. Estos inversores se utilizan para almacenar datos del tipo binario.
La idea SRAM se basa en el cambio continuo de una dirección de corriente a través de los interruptores. Es como DRAM, no tiene costos. SRAM tiene una densidad más baja y es más escaso. Sus módulos son más sencillos. Es posible crear interfaces simples para acceder a la memoria.
¿Qué es DRAM?
La memoria dinámica de acceso aleatorio ( DRAM ) es una forma de RAM que almacena cada pieza de datos dentro de otro condensador en cualquier circuito integrado específico ( IC ) ( circuito integrado ).
Las celdas de memoria de un chip DRAM transportan un tipo de información y están formadas por un transistor y un condensador. El transistor actúa como un interruptor, permitiendo que los circuitos de control del chip de memoria lean o modifiquen el estado del condensador, mientras que el condensador es responsable de almacenar el bit de datos en forma de 1 o 0.
Un condensador funciona de manera similar a un contenedor que contiene electrones. Cuando se llena este contenedor, representa un 1, pero cuando está vacío, representa un 0. Los condensadores, por otro lado, tienen una permeabilidad que resulta en la pérdida de esta carga y, como respuesta, el contenedor “ ” se vacía en cuestión de milisegundos.
Debido a su naturaleza simple, DRAM es relativamente fácil de operar. El recuento total de transistores en un módulo de memoria influye en la capacidad DRAM. Como resultado, el módulo DRAM tiene el potencial de ser 6 veces más competente que el módulo SRAM ( que tiene el mismo número de transistores ).
Aunque DRAM es más lento porque debe actualizar continuamente los datos, lo que requiere tiempo. Aquí es precisamente de donde proviene el “ Dinámico ” en RAM dinámica, ya que alude a la actualización requerida para mantener los datos.
Diferencias principales entre SRAM y DRAM
- SRAM es una forma abreviada de memoria estática de acceso aleatorio, mientras que DRAM es una forma abreviada de memoria dinámica de acceso aleatorio.
- Las regiones de aplicación de SRAM son las divisiones de caché L3 y L2 de la CPU. Mientras que DRAM sirve como memoria primaria en PC ( por ejemplo, DDR3 ).
- SRAM generalmente tiene una capacidad de almacenamiento que varía de 1 MB a 16 MB. Mientras tanto, DRAM generalmente tiene un límite de aproximadamente 1 GB a 2 GB y para las computadoras portátiles las capacidades de almacenamiento varían de 4 GB a 16 GB.
- SRAM se puede encontrar en la CPU, o permanece atascado entre la CPU de cualquier dispositivo computacional y el almacenamiento primario. Mientras que DRAM puede ubicarse en la placa base de un dispositivo.
- SRAM a menudo tiene una capacidad de almacenamiento reducida. DRAM, por otro lado, tiene una mayor capacidad de almacenamiento.
- SRAM no tiene problemas de fuga de cargos. La DRAM, por otro lado, utiliza un condensador, lo que provoca una corriente de fuga. Con frecuencia también requiere el uso de un circuito de actualización de potencia.
Síntesis
SRAM es una forma de un subconjunto particular de memoria semiconductora. Utiliza circuitos de enclavamiento bistables. Es estático y no necesita actualizarse regularmente para funcionar correctamente. Mientras que DRAM es un tipo de RAM que se compone de transistores y condensadores. Los condensadores DRAM están diseñados para la retención de datos, y un valor de uno en un bit indica que el condensador está cargado.
DRAM se ha desarrollado a partir de SRAM y se ha creado efectivamente para tratar los problemas y preocupaciones de SRAM. DRAM, por otro lado, es más lento que SRAM y consume más energía.
Debido a que DRAM es propenso a cargar fugas, debe recargarse regularmente para preservar su carga. Comprender la distinción entre ram dinámico y ram estático permite a los usuarios aplicarlos juiciosamente y de acuerdo con sus requisitos.
- https://ieeexplore.ieee.org/abstract/document/6513476/
- https://dl.acm.org/doi/abs/10.1145/2000064.2000094
Contenido
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