• ip address = an ip address gives a computer a name or identity.
• there are two ways a computer can get an IP address: 1) static   2) DHCP
• 1)   static is where you manualy add an IP address
• 2)   DHCP gives a IP address over a network, this stands for Dynamic Host Configuration Protocal.
• an OCTET is a number or section in an ip address (there are 4 octets at maximum)
• ARPANET = this was the first working version of thee internet. on Febuary 8th 1990 ARPANET was removed and replaced by the internet we use today.
• data can be sent from one place to another with ease. to do this the file must be broken down and each bit is palced in its own individual packet. these pakets are then sent individualy and peaced back together at the final destination. if one peice of the origianal data dose not make it all the way it is resent. a packet also holds a sender address and destination address.
• networks are set up in maps these maps are called Topologys:

•  differant topologys have differand uses but the best one is mesh because if one bit is destroyed the other bits will continue to work.

• ISR = wirless intagrated router
• LAN = local area networks
• WAN = wide area network
• WLAN = wireless local area network
• fibre optic cable = this media can be made of plastic or glass and is as thin as a human hair. fiber optic is currently the most powerfull media, there is no limit to how much data it can carry.                                                                                                                                                               

• a router conects to networks together, or a network to the internet:

this is an osi model and here are two of the many ways to remember ! (all computers have a set of rules. These rules a refured to as protocals)

      1                                                        2                                        real

    Please                                        People                                Phisical  

  Do                                             Desperatly                           Data-link

Not                                                 Need                                    Network

Throw                                            To                                       Transport

Soggy                                           See                                     Session

Pizza                                             Pamela                               Presentation

Away                                          Anderson                         Application

here are two ways to remember ! (all computers have a set of rules. These rules a refured to as protocals)

      1                    2                     real

    Please          People           Phisical  

  Do                  Desperatly     Data-link

Not                Need                 Network

Throw             To                Transport

Soggy            See              Session

Pizza            Pamela        Presentation

Away        Anderson      Application

bandwidth is what measures the amount of Data that can be transferred through the Media in question.

the data is measured in BPS.

BPS stands for Bits Per Second.

fiberoptic has no limit to the bandwidth. this means it can carry any amount of data.  

a real life example of what bandwidth, is a motorway where. the wider the motorway the more cars can travel on it at one time.

in this chapter we have learnt about printers and scanners in detail. printers put infomation onto paper from a computer wheras scanners take infomation from paper and transfur it into digital info. we have learnt about differant types of printers and scanners, how to install them, how to properly maintain them and what functions each have. we learnt about, impact printers which were the fist printers such as a Daisy Wheel and a Dot Matrix. both of these printers are very loud and primitive. we have also lernt about Ink jet printers. ink jets are quite slow compared to more modern printers. ink jets use electrostatic sprey technology, this is where liquid ink is sprayed out of nozzles due to heat and pressure. we also lernt about laser priters. laser printers are fast and efficiant for a work space where the printer is used regualy. laser printers use electrophotographic technology where a laser writes on to a drum tat then uses toner to print on to a page. laser printers can reach a temperature of 200 degrees anftr exesive use.printers mesure speed in PPM (pages per minute) and mesure quality in DPI (dots per inch). we lernt about scanners in equal detail to printers. here are some differant scanners and uses.

while doing chapter 7 i felt that it was quite easy overall, but in some places a litle bit challenging. in comparison to most of the other chapters this was one of the most easy. but equaly the most boaring so far.

i think i could have put more effort in to the class work we have done and done some revision.

over all this was not a great chapter and it seems to be quite irrelavent.

MBPS is used to measure BAND WIDTH.

in chapter six we learnt about computers, laptops, tablet computers, PDA’s and smartphones. in more detail we hav compared the diferances between desktop computers and laptops, mobile phones and smartphones and diferant types of tablet computers. we also did the pros and cons of some of the devices for example the new apple tablet called the Ipad:

PROS = it has 4G networks,  specialydesign applications with better graphics, it has a 10 hour battery life will being used and 30 hours in standby and it has bluetooth.

CONS = the i pad dose not support flash, it dose not have a camera of any sort, it cannot multitask, you canot use a stylus (fingers only) and it dose not have a SD card slot.

PDAs and Smartphones

PDAs and Smartphones are hand-held devices that are popular throughout age groupes like for kids, adults and elderly people. PDA stands for personal digital assistant. PDAs have features such as games,  interner surfing, e-mail, fast messaging, and alot of other features  which are offered by Computers. smartphones are baisicly mobile phones with  alot of built in PDA capabilities and functions. in some cases the softwere that is used in computers can also be used in PDAs and smartphones.

IPhone 4G

1) 4G networks stands for 4 generation and has a much faster internet conection than any other i phones. you could use the internet basicly anywhere.

2) we need 4G because it gives you the ability to connect to the internet any time and anywere which gives you the world wide web to find out any infomation and comunicate with ease.

3) a pro is that the i phone 4G will have a 5mp camera. it is also said that the iphone 4G will have a removable battery.

iPhone 4G (2010) NOT 3Gs

The Differance Between A Laptop And A Desktop

the differance between a laptop and desktop pc is: A laptop is a small portable computer that can be used in a  public area that has an internet conection like Bluewater, or ca be tacken to work/school and home again. Laptops also  can be plugged into a specific docking station for that particular laptop. A desktop pc is primarily used on a desk and cannot be carried around it dose not have a wireless internet conection and can only be connected via a ethernet cable. A desktop computer is also a lot bigger and has a larger variaty of form factors (EG: size and shape.) But the main distinction between a laptop and a desktop computer is that a laptop has a battery and a desktop does  not.

History

One of the first laptops made was the GRiD Compass 1101. this laptop was used by astronauts in  space and on space missions in the early 1980s. It weighed 11 lb (5 kg) and cost 8,000 – 10,000 US dollars! modern Laptops that are used today often tend to weigh and cost alot less than the weight and cost of the GRiD.

My Opinions

in my opinion desktop computers, laptops, smart phones and PDAs all are equal in some way or another for example a laptop can be easily transported to and from work and / or school but can be easily lost or damaged. wheras a desktop is big and heavey and must be kept stationary but this leaves little risk of it getting lost and broken. but there is also smart phones and pdas which are realy small meaning they are easy to lose but are also easy to carry around with you for your own personal use.

My Decision

if i had to say which one i liked best i would say a laptop because it can do everything a desktop pc can do but it is smaller and easily portaple. (^^^)

1) 4G networks stands for 4 generation and has a much faster internet conection than any other i phones. you could use the internet basicly anywhere.

2) we need 4G because it gives you the ability to connect to the internet any time and anywere which gives you the world wide web to find any infomation and comunicate with ease.

3) a pro is that the i phone 4G will have a 5mp camera. it is also said that the iphone 4G will have a removable battery.

iPhone 4G (2010) NOT 3Gs

the differance between a laptop and desktop pc is: A laptop is a small portable computer that can be used in a  public area that has an internet conection like Bluewater, or ca be tacken to work/school and home again. Laptops also  can be plugged into a specific docking station for that particular laptop. A desktop pc is primarily used on a desk and cannot be carried around it dose not have a wireless internet conection and can only be connected via a ethernet cable. A desktop computer is also allot bigger and has a larger veriaty of form factors (EG: size and shape.) But the main distinction between a laptop and a desktop computer is that a laptop has a batery and a desktom dose not.