main memory
main memory
main′ mem′ory
n.
| 单词 | main memory |
| 释义 | main memorymain memorymain′ mem′oryn. main memorymain memory[′mān ′mem·rē]main memory(storage, architecture)Computers have several other sorts of memory, distinguished bytheir access time, storage capicity, cost, and the typicallifetime or rate of change of the data they hold. Registersin the CPU are fast, few, expensive and typically changeevery few machine instructions. Other kinds are cache,PROM, magnetic disk (which may be used for virtual memory) and magnetic tape. main memoryMain memory is the primary, internal workspace in the computer, commonly known as RAM (random access memory). Specifications such as 4GB, 8GB, 12GB and 16GB almost always refer to the capacity of RAM. In contrast, disk or solid state storage capacities in a computer are typically 128GB or 256GB and higher. In a smartphone or tablet, solid state storage generally starts at 32GB or 64GB. The exception to these rules is the Chromebook, which may have only 16GB of solid state storage (see Chromebook). See memory and storage. |
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