Computers -The Journey Inside

continues…

Bit by bit …

1 byte

about 1,000 (one thousand) bytes

about 1,000,000 (one million) bytes

about 1,000,000,000 (one billion) bytes

kilobyte =

gigabyte =

megabyte =

1 KB =

1 MB =

1 GB =

8 bits =

And, each byte holds 8 bits capable of forming 256 combinations of 1/0 -

WOW!

Computers use a variety of devices to store information

STORAGE MEDIA:STORAGE MEDIA:

• Hard Drives (80 GB)

• DVD (17 GB)

• Thumb drives (16 MB - 4 GB)

• CD ROM (640 MB)

• Floppy Disks (1.44 MB)

Floppy Disk

CD-ROM

DVD

Digital Video Disk

Hard Drive

• Storage device, also known as:

– Pen Drive

– Thumb Drive

– USB Key

• 1 to 4 gigabytes of information

What is a USB Flash Drive?