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ICT by Mind Map: ICT

1. Networks and the effects of using them

1.1. network devices

1.1.1. router each internet has a code called Internet Protocol, the router recognises these codes and determines the final destination of the package

1.1.2. NIC Network Interface Card that prepares and sends packages to the internet, comes with latest laptops and desktops

1.1.3. hub enable devices inrage to share external hardware, such as printers and scanners. does not manage data

1.1.4. Bridge used for connecting LANs together, between larger and smaller or small level, usually used in businesses

1.1.5. switch send packages to specific computers and decreasing network traffic

1.2. internet

1.2.1. joined worldwide network consists of smaller networks, opened to every computer, not safe network issue hacking,

1.3. intranet

1.3.1. private network used inside an organization, closed internet with restrictions, can not share as much information as internet, but safer WLAN closed network connects to outside LAN closed network used only can access local packages and informations

2. The effects of using ICT

2.1. business

2.1.1. improvement on trainning

2.1.2. reduce employment fewer man needs to be employed requires lower skilled workers less "real" meeting, can be done virtually

2.1.3. increase employment development staff network manager website designer goods online requires logistics

2.2. working pattern

2.2.1. machines are able to work longer

2.2.2. availability for part-time increases

2.2.3. flexible working hours

2.3. home microprocessor

2.3.1. computers are able to have multiple microprocessors able to connect to hardwares at home

2.3.2. washing machine

2.3.3. heating

2.3.4. alarm system auto triggered

2.3.5. online services shopping banking downloads research entertainment

2.4. potential health issue

2.4.1. back and neck ache spinal cord bending Lumbar disc herniation head ache

2.4.2. repetitive strain injiury long time typing

2.4.3. eye strain screen time

3. The systems life cycle

3.1. analysis

3.1.1. identify problems with existing system

3.1.2. identifying user condition and information

3.1.3. collect facts and user requirements survey honest, anonymous anomus large number time saving wrong understanding of answers interview clear, detailed answer taken more seriously can be changed to suit user time consuming expensive observation cheap see results immediately comparison between old and new may feel uncomfortable (users) examination of current system

3.2. design

3.2.1. produce data capture screen layout validation routine checks required file structure verification

3.2.2. screen display for output

3.3. development&testing

3.3.1. development all above

3.3.2. testing normal abnormal extreme

3.4. implentation

3.4.1. direct changeover implement the new one and takeover the old one fast cheap all data lost if new system failed

3.4.2. parallel running new and old running side by side expensive have back up data time to train staff

3.4.3. phase implementation parts of the new system implement over time, usually 4 phases cheap have backup data easy repair

3.4.4. pilot running implement on 1 branch, usually ideal for large businesses

3.5. documentation

3.5.1. user documentation hardware requirements user manual log in log out trouble shooting guide Q & A

3.5.2. technical documentation copy of design purpose of system list of variables used copies of all diagrams to represent the data list of known bug test plan

3.6. evaluation

3.6.1. comparing performance

3.6.2. identify limitation

3.6.3. identify inprovements

3.6.4. cost efficiency

4. animation

5. sensors

5.1. temperature

5.2. light

5.3. IR

6. Types and components of computer systems

6.1. RAM

6.1.1. backstage storage of running applications, temporary memory for quick running. (random access memory)

6.2. ROM

6.2.1. program to boot up the computer, (read only memory)

6.3. Operating System

6.3.1. control input/output

6.3.2. supervise running of programs

6.3.3. recognises hardware

6.3.4. handles storage of data

6.3.5. maximise memory

6.3.6. handle interruption and decision to continue

6.4. User Interface

6.4.1. GUI Graphic User Interface easy to use and have features like windows, icons, buttons, menus and pointers, commercial purposes

6.4.2. CLI Command Line Interface type series of precise commands to operate the system, hard to use, preferred by computer engineers

7. Input and output devices

7.1. input

7.1.1. mouse, keyboards

7.2. output

7.2.1. motor

7.2.2. screens

8. Storage devices and media

8.1. storage

8.1.1. fixed hard discs discs coated with magnetic materials that has read and write surfaces, found on laptops and desktops

8.1.2. portable hard drive portable hard discs, compact, large storage with expensive price tags. Rate of transfer is a large reason why they are chosen

8.1.3. magnetic tape extremely large storage and less expensive compared, fast write in rate and slow reading rate

8.1.4. optical disc flat circular discs where data is stored as bumps and reads by reflection of the bumps by laser. one time write in (films)

8.1.5. blue-ray optical disc with higher capacity and better audio and video quality (film)

8.1.6. solid state small, compact, and does not require electricity to store data, smallest form of data storage

9. ICT applications

9.1. large devices

9.1.1. creation music video

9.2. small devices

9.2.1. phone call SMS

9.2.2. tablets larger version design brochure flyer artwork

10. Safety and Security

10.1. danger

10.1.1. physical room overheating fire tripping of cables electricution heavy equipment falling access of others log on systems open rooms shoulder surfer

10.1.2. data capture smishing pharming phishing spaming hacking password digital signiture

10.2. encryption

10.2.1. mostly used by banks to replace important information with other symbols to protect