How Computers Connect To A

learnedmooseupvalleyΗλεκτρονική - Συσκευές

7 Νοε 2013 (πριν από 3 χρόνια και 5 μήνες)

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How Computers Connect To A
Larger System
What kind of computer is this?
Answer:
Mainframe
All users share the programs
stored on the Mainframe computer
These
are the
terminals
Each terminal has
A mouse
A monitor
A keyboard
Cables to connect it to the
mainframe.
There are two types of terminals
Intelligent
: The terminal has its own
memory (RAM) and processor (CPU).
This means the terminal can do
some
things on it’s own, without
using the mainframe.
Dumb
: No processor. Can only
display simple letters and numbers.
A network: Computers connected
together.
LAN

Local Area Network
-
Computers connected in the same
place, like in the same room or
building.
WAN

Wide Area Network

Computers connected together over
a wide area, like over several
buildings or even several cities!
Question: What kind of network do
we have in Room 603?
All the computers are connected in
the same room, so our network is a
LAN (local area network).
Question: What kind of network is
the Internet?
The Internet are computers
connected over a wide geographical
area, so the Internet is a Wide Area
Network (WAN).
In fact, the Internet is the biggest
example of a WAN in the world!
What kind of network is this?
These
computers
are
connected
in the same
area, so
it is a LAN.
(Local Area
Network.)
What kind of network is this?
A network separated
over a large
geographical are is
a WAN (Wide Area
Network.)
A hub
A device that
connects all the
computer wires
together on a
network.
LAN with a hub
A Computer Resource
Programs
Information
Peripheral Equipment

Anything outside the computer

Printer

Scanner
Networked computers can
share the same resources
Networked computers can share
printers.
Networked computers can share
programs.
Networked computers can share
information.
On A Network
Each PC or workstation has its own
CPU and Hard Disk.
Each computer has a “Network
Interface Card (NIC) that connects
the computer to the network.