world wide system of interconnected computers networks connecting hundreds of millions of "computing devices" together.
It's to let people know where you are on computers
3.An IP address
connect to analog to digital uses Telephone Circuit Switched Packets
encompasses all high speed digital
They dominate Broadband today
1.Telephone local loops using DSL
2.Cable infrastructure with community Antenna TV (CATV)
Digital Subscriber Line
Central Processing Unit
is the computational engine and oversees what the computer is doing
Fast Storage that hold data and programs (RAM or ROM)
stores massive amount of data (HDD and CD)
general purpose machine run different applications
Hard Disks Drive (magnetic)
HDD vs Memory storage
HDD has a ton of memory while memory storage is limited
(Basic Input/Output system) first instruction in the start up process and is stored in ROM
Kinetic + Potential
Lower Earth Orbit
90 mins-3 hours
Middle Earth Orbit
adv: reduces transmission delay
Geostationary Earth Orbit
adv: few satillites
Highly Elliptical Orbit
adv:excellent for monitoring Earth
Global Positioning System
Generic Wireless Advantages
Generic Wireless Disadvantages
LAN (Local Area Network)
3. Hot Spots
allows PAN (personal Area Network)
World Wide Interoperability for Microwave Access
allows MAN (metropolitan Area Network)
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