What is the difference between

- the web ?and

- the internet ?–

https://www.google.co.uk/#q=what+is+the+difference+between+the+web+and+the+internet

For those who think it is the same thing, it is not.

Fundamentals of Internet Technology

CM0129D – single semester versionCM0130L – linked semester version

This module is about the fundamentals of Internet technologies. The 'WEB' is one small part of the whole technology. The module includes a selection of topics to cover the more important areas that need to be

understood by anyone involved in any area of media and computing.

Computers and NetworkingDigital computer overview.

- I/O devices, CPU'S, buses.- Memory - RAM, ROM, PROM.

PC architecture.- x86 processor family- CMOS Ram and setup, BIOS.

Operating systems- Kernels, shells- MS Windows– UNIX– Linux

Network & Internet technologies- LAN, WAN, LINX, JANET

System connectivity - Protocol stacks (TCP/IP);

Computer Networks– Peer-to-peer systems;– Client server systems;

Application layer - FTP, Telnet

Visual systems- eyes and vision- colours, colour temperature

- television- codecs- compression and data rates

Visual technologies

TelevisionBroadcast media

– standards– methods– codecs

Vision– RGB– colour definitions

Coding for web delivery of audio/video material

Where do we begin?

Internet technologies are used extensively to build modern communication networks.

Examples of applications that use the internet are:

The world wide webTelephone (viber, skype)emailtexting (eg whatsapp)Smart television (iplayer etc)

… and communication channels wifi, 3G, 4G …

Terminology

DIGITAL

● DIGITAL signals use encoded binary numbers embedded in the signal, to represent the quantity being transmitted.

● A binary number is made up entirely from 0's and 1's, and is transmitted in the form of electronic on/off pulses (on =1, off =0).

● Regenerated output signals are subject to "quantity" errors from sampling at set intervals. Finer sampling improves resolution, but needs more bandwidth.

Frequency and Time Period

The clock signal is used to drive the system. __ __ __ __ __ __ __ | | | | | | | | | | | | | ----->= 1 = HIGH, YES, ON | | | | | | | | | | | | | |__| |__| |__| |__| |__| |__| |__---->= 0 = LOW, NO, OFF

t=time period f=1/t f=frequency

One full time period t is the time taken for one complete cycle.

Therefore, if the time period takes 1µs. The frequency can be calculated as 1,000,000Hz or 1MHz.

Serial and Parallel transmission

SERIAL DATA TRANSMISSION ___________ ______________ |INFO. | |INFO. | |SOURCE (Tx)|--------------------->|RECEIVED (Rx) | |___________| |______________|

PARALLEL DATA TRANSMISSION ___________ ______________ | |--------------------->| | | (Tx) |--------------------->| (Rx) | | |--------------------->| | | |--------------------->| | | |--------------------->| | | |--------------------->| | |___________|--------------------->|______________|

Digital Recording & Editing

Digital recordings are theoretically indestructible.

If you make a mistake editing, or don’t like the result, you simply start again.

Everything on the internet is

governed by:

NUMBERSNUMBERS

A look at the web : http://www.google.co.uk/

66.249.91.10466.249.91.103

.css code file syntaxThe syntax of the css file is relatively simple where a typical css file entry will look like this::

###########################################body { margin:20px; padding:10px; width:90%; font-family:arial, verdana, helvetica, sans-serif; font-size:80%;

background-color:#ddd; color:#000; } ###########################################

digital images : hue, sat, rgb

Digital information is, at heart, just a set of numbers.

So we start with numbering

systems and counting.