Memory

Question 1

What are the names of internal/main memory?

Answer 1

RAM-Random Access Memory.

ROM-Read Only Memory.

Question 2

What are the features of a RAM?

Answer 2

Contents is permanent.
When power off no contents is lost.
Cannot be written to.
Data cannot be altered.
Can store instructions when computer starts.

Question 3

What are the features of a ROM?

Answer 3

Contents can be changed.
Contents not lost when no power (volatile)
Can be written to.
Data can be altered.
Stores data/software/code.

Question 4

Features of flash memory?

Answer 4

Doesn’t loose data when volatile (no power)
Data can be rewritten.
Used in cameras/phones/USB’s/ hard disks.

Question 5

What is a EEPROMS?

Answer 5

Electrically erased and rewritten- stores instructions in BIOS, computer uses this when starting.

Question 6

What is the capacity of memory measured in?

Answer 6

Megabytes (MB)
Gigabytes (GB)
Terabytes (TB)

Question 7

Why do we need Secondary/Backing storage memory?

Answer 7

Needed to store files/data when no power.

Stores operating system & data files, hard disk used for this.

Question 8

What are the 2 storage mediums called?

Answer 8

Magnetic

Hard Disk

Question 9

What are the features of a Magnetic & Hard Disk storage mediums?

Answer 9

Stores data/operating system/files when no power.
Advantages- Large storage capacity & cheap.
Disadvantages- Easily damaged (knocks, heat etc) & hard disks should not be moved.

Question 10

What are some examples of Removable Storage Media’s?

Answer 10

CD
DVD
Blu-Ray
Floppy Disk
MANY MORE

Question 11

Removable Storage Media-What are the features of a CD?

Answer 11

Stores-Music, PC Data, Games
Advantages- CD-Rs are cheap, CD-Rs can be written more than once, Modern PC’s can use them.
Disdvantages- CD-ROM can’t be written to, Small Capacity, Easily Damaged.

Question 12

Removable Storage Media-What are the features of a DVD?

Answer 12

Stores-Movies, Computer Games
Advantages- Cheap, Large storage, Modern PC’s can use them.
Disadvantages- Easily Damaged, Some expensive, Cant be used on old PC drives.

Question 13

Removable Storage Media-What are the features of Blu-Ray?

Answer 13

Stores-HD Movies & Computer Games.
Advantages-Large Storge
Disadvantages- Expensive, Can’t use on CD/DVD Drives, easily damaged.

Question 14

Removable Storage Media-What are the features of a Floppy Disk?

Answer 14

Stores- Small files
Advantages-Easily transported, Old PC’S can use them, Not easily damaged.
Disadvantages-Not really used in modern computers, small storage, easily lost/stolen.