Some important inventions

The light, computer, the internet, hard disc and software are inventions which are of great importance. These inventions have helped us perform tasks more easily and in a practical way. Carrying out a job now as compared to before has required much less effort; however, these inventions have also brought some consequences on the people's health, such as tiredness, exhausted eyes, consecutive headaches and joint pains.

*tried to rephrase some sentences and as much as possible stayed within context. hope this helps! from a native english speaker :)

some important inventions .

There are many inventions that are really important such as the light bulb, the computer, the internet, hard disc and the software, all these they are of great importance. These inventions have helped us to perform tasks more easily easier and in a more practical way. Weather in the For carrying out of a job compared with to before, it is much minus easier.  But it has also brought some consequences on regarding the health of people such as tiredness , eyes exhaustion , consecutive consistent headaches and pains pain in the joints.

Some Important Inventions .

There are many inventions (really important*) such as the electric lighting, the computer, the internet, the hard disc and the software, all of these they are of great importance. These (inventions)* have helped us to perform tasks more easily* and in a practical way, Weather where in the carrying out of a job, compared with before, there is *much advantage/benefit minus, but it has also brought some consequences on *in the health of people, such as tiredness , eyes fatigue exhaustion , consecutive persistent headaches and pains in the joints.

*avoid repetition : 'important', 'inventions'

*this is correct; the tasks are easier, because they are performed more easily

*you could clarify the nature of this advantage :  for example 'a great advantage in terms of time and manpower'

*better to write 'to people's health'