social and ethical issues LU8 Flashcards
economic reasons for using computers
quicker and more accurate
reliable,efficient
makes globalised business possible-communication through internet
saves paper
productivity increased-cost effective,efficient,more reliable,replaces manual labour
why is there digital divide
lack of infrastructure
poverty and no access to basic necessities
lack of education,basic literacy and schooling facilities
politics- civil wars and violence-no time for divide. internet taken away in wars
how do we bridge the digital divide
improving infrastructure
reduced poverty
improved education
introduce cellphones,easier than computers
what is ergonomics
Hardware that is designed with the user in mind
sore thumb syndrome
texting and making many repeated movements limiting blood circulation
what is RSI and how does it occur
repetitive strain injuries
occurs from repeated physical movements that cause damage
symptoms of RSI
damage to tendons,nerves,muscles +other soft body tissues
tightness,discomfort,tingling,coldness,numbness,stiffness,soreness,burning,pain IN hands,wrists,fingers,forearms,elbows,upperback,shoulders+neck
what makes you more likely to develop injuries with texting
using incorrect typing techniques or body positions
what is CTS
carpal tunnel syndrome
a painful condition involving the median nerve, flexor tendon + transverse carpal ligament.
how does CTS occur
as you move your hand + fingers - the flexor tendons rub against the sides of the tunnel created by the carpals and transverse carpal ligament.
The rubbing causes irritation of the tendons causing them to swell, which applies pressure to the median nerve.
how to treat CTS
splints and braces
anti inflammatory medication
cortisone injections
surgery
what are the effects of CTS
tingling
numbness
debilitating pain
how do you prevent eye strain
take frequent breaks from viewing the computer
test eyes regularly
how is eyestrain caused
continual refreshal of CRT screens and detectable flickering
amount of time spent on computers
how much of the world’s electricity is used by computer systems
between 5 and 10 percent
physical problems caused by computers
sore thumb syndrome
repetitive strain injuries
carpal tunnel syndrome
eye strain
how to recycle computer components
take to reliable IT waste disposal centre
what to do with printer cartridges
if cannot be refilled, dispose at printer cartridge store or IT waste disposal centre
how to practice green computing
upgrade components of new device before buying to extend life of device
recycle computer components
reduce amount you print
check manufacturing company’s green manufacturing policy and commitment to minimise waste during manufacturing of devices
green computing
- designing , engineering, manufacturing or disposing computer components in a way that reduces their environmental impact