Human Computer Interface

Human Computer Interface

1. Command Line Interface

   • Advantages
     • They don't use graphics so they are less demanding on the system
     • It contains a lot of options that are usually inaccessible without third party software
     • Complex commands that usually take a lot of time can be entered with ease and quickly thought he command
   • Disadvantages
     • It takes a lot of learning to become use to this type of interface so you need to be patient with it and learn it
     • you need to memorize a lot of commands because you will use them over and over again and some of them are very difficult to do so memorizing them would be difficult
     • it can be very frustrating at times because if you type in one thing wrong it makes everything wrong so then you would have to go through the whole document to correct the mistake
     • it requires you to reference back to the manual a lot because some things that you need to learn are very in depth and difficult

2. Menu Driven Interface

   • Advantages
     • It can restrict the options that the user can select which means that it is a lot simpler for people to use because it is all there for them to select
     • Menu interfaces link very well with touch screen systems so that they are able to be used even in future phones because it is very adaptive
   • Disadvantages
     • It can slow down the use of the device it is being used on because they have set routes that have to be followed to use a certain feature of the report
     • If the design of the interface is not suitable then it may mean that it is very tasking to use

3. Graphical User Interface

   • Advantages
     • They are very user friendly because they have a lot of graphics which makes it very useful for them and then it means they will be able to adapt to the interface a lot easier than some of the more difficult interfaces
     • This is the most commonly used interface so all new computers come with this pre installed which makes the process of using this much easier than other forms of interfaces.
   • Disadvantages
     • It is very demanding on the system because it would take a lot of power from the RAM and processor because there is a lot of graphics on the screen
     • Experienced users may find these forms of interface very slow for their tasks they would find a command line interface a lot more useful for their job.

4. On Screen Forms

   • Advantages
     • it is automatically validated which makes it much easier for the business that needs the forms because they do not have to hire staff that will validate it
     • it is very similar to paper forms which means that very simple for people to understand because it is in the same format
   • Disadvantages
     • it is a demanding system when it comes to hard disk memory and RAM which means that if you do not have enough available then it could be very slow