Storage Flashcards

1
Q

Computer storage is divided into

A

primary, secondary (and offline)

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2
Q

primary storage

A

directly accessed by the CPU

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3
Q

types of primary storage

A

RAM, ROM, cache, and registers

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3
Q

types of primary storage

A

RAM, ROM, cache, and registers

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4
Q

random access memory

A

used for temporary storage of programs and data currently in used

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5
Q

ram is

A

volatile - loses content when turned off

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6
Q

read only memory

A

contains data that can be read but not altered or deleted

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7
Q

rom is

A

non-volatile - retains data even with no power

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8
Q

secondary storage

A

External storage devices that are not directly accessed by the CPU

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9
Q

secondary storage includes

A

SSD and HDD

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10
Q

examples of secondary storage

A

hard disk, dvd, blu-ray, flash drive

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11
Q

secondary storage is

A

non-volatile

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12
Q

advantage of secondary storage

A
  • ideal for permanently storing data
  • has more capacity
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13
Q

hard disk drives

A

Operates on magnetic storage principles

Is cost efficient

Has a high storage capacity

Used in computers, laptops, webservers, backup systems for large facilities.

In computers, stores the OS, installed programs and user’s data.

Is read/written using magnetism

Made of a magnetic surface called a platter

The platter is divided into various sectors and tracks that can store a specific number of bytes

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14
Q

solid state drives

A

Operates on electronic (solid state) principles.

Used in USBs, tablets, and mobile phones.

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15
Q

types of secondary storage

A

magnetic, optical, solid-state

16
Q

examples of magnetic

A

tape, hard-drive, floppy disk

17
Q

examples of optical

A

cd, dvd, blu-ray

18
Q

examples of solid-state

A

pen drive, flash memory

19
Q

magnetic

A
  • store data by applying magnetic charge to a magnetised material
  • uses platters which are divided
    into tracks and sectors. Data is read and written using electromagnets
20
Q

advantages of magnetic

A

cheap, fast, hold lots of data

21
Q

optical

A
  • use light to read and write data. on the disk surface, there are land and pits (highs and lows) that reflect and scatter light
  • uses lasers to create and read pits
    and lands
22
Q

features of optical

A

helpful in long term, low storage capacity, slow

23
Q

solid state

A

uses NAND or NOR technology. Transistors are used as control gates
and floating gates

24
Q

advantages of solid state

A

Portable, small

Durable, reliable as no moving parts