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Flashcards in Chapter 8 Deck (39)
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1

storage medium

physical material on which a computer keeps data, info, programs, and apps (secondary storage)

2

cloud storage

keeps info on servers on the internet, and the actual media where the files are stored are transparent to the user

3

storage device

the hardware that records and/or retrieves items to and from storage media

4

reading

the process of transferring items from a storage medium into memory

5

writing

the process of transferring items from memory to a storage medium

6

capacity

the number of bytes a storage medium can hold

7

kilobyte

one thousand

8

megabyte

one million

9

gigabyte

one billion

10

terabyte

one trillion

11

storage medium

items remain intact even when you turn off a computer or mobile device- nonvolatile

12

memory

holds data and instructions temporarily-volatile

13

transfer rate

the speed with which data, instructions, and info transfer to and from a device

14

hard drive

the collection term for both hard disks and SSDs- contains circular platters that use magnetic particles to store data, instructions, and info

15

what determines storage capacity of a hard drive

number of platters it contains, whether it uses longitudinal or perpendicular recording, and the density

16

formatting of a hard drive

dividing the disk into tracks and sectors so the operating system can store and locate data and info on the disk

17

track

a narrow recording band that forms a full circle on the surface of the disk

18

sector

wedged shaped sections, which break the tracks into small arcs

19

disk defragmenter

a tool that reorganizes the files and unused space on a computer's hard disk so that the operating system accesses data more quickly and programs run faster

20

form factor

size

21

read/write heads

the mechanism that reads and writes items in the drive as it barely touches the disk's recording surface (each platter has 2)

22

head crash

when a read/write head touches the surface of a platter

23

solid state drive (SSD)

flash memory storage device that contains its own processor to manage its storage

24

SSD advantages

faster access times, faster transfer rates, quieter operation, more durable, lighter weight, less power consumption, less heat generation, longer life, and defragmentation isn't required

25

major difference b/w USB and SSDs

the form factor (size) and capacity of the drives- USB designed to be external and SSD is designed to be in the computer

26

USB vs. SSD/hard disk

SSD doesn't have moving parts, while USB has drive motors to spin up the magnetic platters and drive heads
SSDs are mechanically better
SSDs are 3x more expensive
SSDs have way less capacity

27

external hard disk

separate freestanding storage device that connects with a cable to a USB port or other port on a computer or mobile device

28

reasons to use external hard drive

transport large number of files, most include back-up software, easily store large audio/video, secure your data, and add storage space to mobile computer or desktop

29

memory card

a removable flash memory storage device that you insert and remove from a slot in a computer, mobile device, or card reader/writer

30

USB flash drive

plugs into a USB port on a computer or mobile device