Click here to go to the Nelson Thornes web site
Information Systems for you
Chapter 21 - Computers and Your Health
» Chapter 1
» Chapter 2
» Chapter 3
» Chapter 4
» Chapter 5
» Chapter 6
» Chapter 7
» Chapter 8
» Chapter 9
» Chapter 10
» Chapter 11
» Chapter 12
» Chapter 13
» Chapter 14
» Chapter 15
» Chapter 16
» Chapter 17
» Chapter 18
» Chapter 19
» Chapter 20
» Chapter 21
» Chapter 22
» Chapter 23
» Chapter 24
» Chapter 25
» Chapter 26
» Chapter 28
» Chapter 29
» Chapter 30
» Chapter 31
» Chapter 32
» Chapter 33
» Chapter 34
» Exam Answers
   - Full Course
» Exam Answers
   - Short Course
Things To Do (page 175)
1
Overloaded sockets cause a fire hazard. Room needs re-wiring with more sockets put in. Trailing wires are easy to trip over. Sink them under the floor.

Some desks are either too high or too low and are likely to cause backache when used. Replace with desks of the correct height.

Chairs are non-adjustable and are therefore illegal for use in an office. Replace with adjustable chairs.

There are no blinds on the windows so the sun will shine in and cause glare on the screens. Need adjustable blinds on the windows.

Office is too cramped. More space is needed between the desks.
 
Examination Questions (page 345)
1
  RSI. Can be prevented by the use of wrist guards or correct seating posture.
Eye strain. Can be prevented by the use of glasses so there is a need to have regular eye tests.
Other ergonomics answers can be given.
 
2
  Use an adjustable chair and footrest. Have regular eye tests and wear glasses if needed.
 
3(a)
  The smallest dot of light on a screen .
(b)
  Radiation from the monitors causes miscarriages in pregnant women. Eye strain caused by focussing on the screen for a long period of time.
(c)
  RSI causing joints to seize up due to typing or backache through sitting at the computer for a long period of time.
     
4
Circuit breaker to protect against the risk of electrocution
No obstacles in walkways (e.g. boxes of printer paper, trailing wires etc.).
All plugs have been wired correctly.
No overloaded sockets.
Faulty equipment should be removed immediately.
No drinks allowed by machines.
 
5
Seats should be adjustable with 4 legs and castors.
Blinds on windows should be included which reduces glare.
The floor should be carpeted to reduce noise.
Wires should pass through walls or trunking.