Monday, 05-02-2024
IMPACT PRINTERS
1. Dot matrix printer
2. Daisy wheel printer
NON-IMPACT PRINTERS
1. 3D Printer
2. Inject printer
3. Laser printer
Skills: To be able to: explain storage devices.
explain the meaning and purpose of backup.
describe the differences between primary
and secondary storage devices.
put storage devices into magnetic, optical
and solid state.
STORAGE DEVICES
They are devices used to keep or store information for future use
EXAMPLES
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
ROM
RAM
SSD (Solid state drive)
Hard Disk Drive
CD
Pendrive / USB drive
DVD
Floppy Disk
Magnetic tapes
SD card (Secure Data Card)
11. XD card (Extreme Data Card)
BACKUP
Copying files or information to another medium in case the original copy gets missing or lost
PURPOSE
1.
2.
3.
4.
5.
To protect your data from being lost
To prevent hackers from destroying your information
Accidental deletion
To prevent data loss caused by hardware failure
Virus attack
CATEGORIES OF STORAGE DEVICES
1. Magnetic storage devices
2. Optical storage devices
3. Solid state devices
MAGNETIC STORAGE




Hard disk drive
Floppy disk drive
Magnetic tape
Portable HDD