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📜  随机存取存储器(RAM)和硬盘驱动器(HDD)之间的区别

📅  最后修改于: 2021-06-28 14:16:04             🧑  作者: Mango

计算机的新手经常会在随机存取存储器(RAM)和硬盘驱动器(HDD)之间感到困惑。在这里,我们对两者进行比较。

RAM和HDD之间的相似之处:

  • 两者都用于存储数据。
  • 两者都是计算机的物理组件。

RAM和HDD之间的区别:

Parameter RAM HDD
Full Form RAM stands for Random Access Memory. HDD stands for Hard Disk Drive.
Also known as RAM is also known as primary memory. HDD is also known as secondary memory.
Components RAM does not contains, mechanical parts, only electronical parts like transistors. HDD contains moving mechanical parts, like the arm.
R/W Time RAM has shorter R/W time. HDD has longer R/W time.
Memory Access In RAM each and every element takes same time to be accessed. In HDD different elements take different time to be accessed.
Size In a system the RAM is smaller than the HDD. In a system the HDD is larger than the RAM.
Cost RAM is costlier per unit storage. HDD is cheaper per unit storage.
Noise RAM does not produces noise. HDD can produce noise due to mechanical movements.
Duration of Data Data stored in RAM is temporary. It remembers as long as it has electricity, i.e. the power is on. Data stored in HDD is permanent, i.e. it retains data even after shutdown.
Speed of Computer Inadequate RAM slows down the speed of the computer. HDD does not affect the speed of the computer.