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TRENDS, ISSUES & CHALLENGES IN IT - Coggle Diagram

- - - - Hash function
      - Proof-of-work
      - Distributed Network
      - Smart Contract
  - - - Change the information of all the blocks on the Blockchain
      - Re-do the proof-of-work for each block
      - Take control of more than 50% of the peer-to-peer nodes
  - - - Ether / Ethereum by Vitalik Buterin
      - Litecoin by Charlie Lee
      - Namecoin by NMC
      - Dogecoin by Jackson Palmer & Billy Markus
    - - Accept them as payment for goods and services
      - Exchange them for a more traditional form of currency
      - Become a Miner and mine them. You will get salary from mining the coin. Which is generated on the spot.
        
        Currently, the reward for successfully mining a Block is 12.5 BTC! Which is approximately, USD 108k or RM 432k (as of May 2018)
        
        The rewards is halved every 210k blocks (started with 50BTC, now its 12.5BTC)
- - - - Education
        
        Impacts on Education
        
        Advantages:
        
        IT complements traditional educational techniques.
        
        Access to more information resources.
        
        Distance Learning.
        
        Invisible college networks.
        
        Disadvantages:
        
        Information overload
        
        Information may not be reliable
      - Business / Work
        
        Impacts on Business / Work
        
        Advantages:
        
        Enhanced information management.
        
        Telecommuting
        
        Reduction in paper work since most tasks handled electronically.
        
        Physical movement of work from areas of high labor cost to areas where there is low cost.
        
        Disadvantages:
        
        Unemployment
        
        Low productivity (in some cases)
      - Healthcare
        
        Impacts on Healthcare
        
        Advantages:
        
        Led to the use of Telemedicine in solving medical problem across the globe.
        
        Telemonitoring
        
        Interactive services – real time interactions between patient and healthcare providers.
        
        Self diagnosis.
        
        Enhanced the works of medical staff.
        
        Disadvantages:
        
        Self medication
        
        Sometimes it is difficult to ascertain the quality of service
      - Environment
        
        Impacts on Environment
        
        Advantages:
        
        Enabled the understanding of physical and ecological process.
        
        Now it is possible to monitor and sometimes control the effects of changes in earth’s environment through satellites.
        
        Eg; Weather forecast, disasters and natural hazards.
        
        Reduction of paper usage.
        
        Disadvantages:
        
        Global warming.
        
        E-wastes (discarded e-equipment)
        
        Computers and mobile phones emit dangerous rays and gases which harmful to living organisms.
        
        Phone radiation reported to causes cancer, meanwhile to animal it decreases diary resources
      - Communication
        
        Impacts on Communication
        
        Advantages:
        
        New forms of communication – mobile phone, teleconferencing.
        
        It has brought about networking which reduces isolation.