An address generated by the CPU is commonly referred to as a logical address, whereas an address seen by the memory unit—that is, the one loaded into the memory-address register of the memory—is commonly referred to as a physical address. ——教材P355 物理地址是真实的地址,而逻辑地址不是。
现代处理器使用的是虚拟寻址的方式,CPU 通过访问虚拟地址(Virtual Address),经过翻译获得物理地址,才能访问内存。这个翻译过程由 CPU 中的内存管理单元(Memory Management Unit,缩写为 MMU)完成。 具体流程如上图所示:首先会在 TLB(Translation Lookaside Buffer)中进行查询,它表位于 CPU 内部,查询速度最快;如果没有命...
A. CPU, memory and disk B. CPU, input and output unit C. CPU, memory and I/O system D. CPU, memory and ALU 相关知识点: 试题来源: 解析 C.CPU, memory and I/O system 反馈...
The unit is DCLK, and the value ranges from 1 to 4095. NOTE: This parameter is available only when CKE Power Down is set to Enable. 20 Memory Test Sets whether to enable the memory test during fast boot. The options are as follows: Enable Disable Enable Warm Boot Fast Support ...
but it is physically relatively large. It is used primarily for small amounts of memory called registers in a computer’scentral processing unit(CPU) and for fast “cache” memory.Dynamic RAM(DRAM) stores each bit in an electrical capacitor rather than in a flip-flop, using atransistoras a...
A. CPU, memory and disk B. CPU, input and output unit C. CPU, memory and I/O system D. ALU E. 华中师范大学网络教育学院 F. 《教育技术学专业英语》练习测试题库参考答案 相关知识点: 试题来源: 解析 A.CPU, memory and disk 计算机系统的基本单位是:CPU、内存和I / O系统。反馈...
the unit of which can be converted to Mb/s Last 300 seconds output rate 3 bytes/sec, 0 packets/sec Input: 10952 packets, 1342862 bytes //Basis of average packet length calculation 0 unicasts, 5784 broadcasts, 5168 multicasts, 0 pauses 0 overruns, * runts, * jumbos, * FCS errors * ...
也就是说如果这个数据一开始在L1d、L2都不存在,那么就得先从main memory加载到L2,然后从L2加载到L1d,最后CPU才可以访问。 3.3 CPU Cache Implementation Details 3.3.1 Associativity 没看懂。略。 3.3.2 Measurements of Cache Effects keyword:cache prefetching、TLB cache miss ...
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RAM, or Random Access Memory, is your computer’s short-term memory. It temporarily stores data that your CPU (Central Processing Unit) needs to access quickly. Unlike your hard drive or SSD, which provide long-term storage, RAM is volatile memory that loses its contents when your computer ...