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Computers information is encoded as patterns of 0s and 1s which are called bits.
  计算机信息编码为0和1的模式，称为位。

A string of eight bits is called a byte.
  由八位组成的字符串称为字节。

To identify individual cells in a computer’s main memory, each cell is assigned a unique “name,” called its address.
  为了识别计算机主存中的单个单元，每个单元都被分配一个唯一的“名称”，称为其地址。

A computer’s main memory is often called RAM.
  计算机的主存储器通常称为随机存取存储器。

Most computers have additional memory devices called mass storage systems , including magnetic disks, CDs, DVDs, magnetic tapes, and flash drives.
  大多数计算机都有称为大容量存储系统的附加存储设备，包括磁盘、CD、DVD、磁带和闪存驱动器。

BDS (blu-ray Disks) provides over five times the capacity of a DVD.
  蓝光磁盘的容量是DVD的五倍以上。

Another application of flash technology is found in SD (secure digital) memory cards, which are ideal for digital cameras,smartphones, music players, car navigation systems, and a host of other electronic appliances.
  闪存技术的另一个应用是安全数字存储卡，它是数码相机、智能手机、音乐播放器、汽车导航系统和许多其他电子设备的理想选择。