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?