This document summarizes the history and effects of electronic devices. It discusses how electronics began with the vacuum tube innovation in 1907 and the invention of the microprocessor in 1968. It outlines both the positive effects of electronics in simplifying manufacturing and the negative effects on children's social skills and reliance on calculators. The document also discusses concerns about the health effects of electromagnetic fields from devices and the contradictory evidence regarding impacts on balance, pain, and brain tumors.

1. Presented and designed by a group of WBUT students
Department IT
Damayanti Ghosh, Manali Das , Kanak, Sudipta and Sudeshna
For all the students of 1st year

2. • The use of electronic devices is growing day by day. They
are common at home, in schools & at work. Nearly all the
working places & living places have
computers,televisions,radio,telephones,mobile,fax,air-
conditions,camera etc.

3. • Modern electronics began with the
innovation of the vaccum tube by Dr. lee
Deforest in 1907.
• Microprocessor chip was invented by Dr.
M.E.Ted Hoflin in 1968
• IntelCorporation introduced commercial
microprocessor in 1971 designed for a
japanese calculator company.
• To understand the interesting history of
electronic devices helps explain why
science and technology are important
too.Witout the electronics, our status in
this world community would be
diminished, therefore it is important to
study the history too.

4. Positive effects of

5. Think about gadgets you use.
Jupiter, Saturn, Uranus, and Neptune all have
rings.

6. What is our benefit?
Electronics simplify the complexity of many manufacturing
process and household work .
The transfort system becomes better,safer,environ-
friendly, pollution reducing.
Digital cameras,camcorders,TVs,photo frames,etc help us to
get rid of the traditional way to enjoy precious moments and
relieve those.
Development in communication,researh,demonestration
and administration.
And many more..

7. We and the Digital world:
society Digital media
education Security systems
Design and awareness-
administration social networks
communication distance learning and OCWs
amusement Cellphones and andriods

8. Gadgets are our friends only.

9. Bad effect of electronics devices on
Children
In some cases they can become reliant on
them, take for example the calculator. I knew a kid
who was so reliant, they couldn't do basic math
without one (I'm talking anything past addition and
some subtraction - even that was too hard.) This
was in their final years at school.
Socially, some use them as a replacement for
friends and 'normal' activities. Especially if they're
being bulied at school, it can become an escape and
then it can become their entire world if the parents
(or the kid if they're old enough) aren't careful. In the
long run, this could impact them mentally when they
realize they actually have no friends outside their
electronic world

10. Are electronic devices bad for our health?
As we use and grow more dependent on
electronic devices, concern arises about what
effect these electronic devices have on human
health. Many of us are in daily contact with
computers, radios, mobile cell
phones, televisions, and microwave ovens. All
these devices emit electromagnetic fields
(EMFs), which are generated via oscillating
currents. In a typical home, the EMFs can range
from 0 to 5 milliwatts per meter squared.
Various effects on human behavior have been
reported following exposure to EMFs. For
example, in transcranial magnetic stimulation, or
TMS, magnetic currents are used to generate
electrical currents within the brain. This
stimulation leads to changes in patterns of neural
activation due to the currents depolarizing the
neurons; in essence, the magnetic fields are

11. In 1996, The World Health Organization
established the International EMF Project to
ascertain any link between human health and
EMFs ranging from 0-300 GHz, which is the range
of operation for most electrical devices. Scientific
evidence has been analyzed, and so far the
results are contradictory as to whether EMFs harm
or otherwise affect human health. For
example, some studies suggest that magnetic
fields can alter human balance, pain
perception, and bipolar behavior; however, the
studies lack reproducibility. When attempts were
made to find a link between mobile phone use and
headaches, Alzheimer's disease, or brain
tumors, these experiments again came up
inconclusive.
Nevertheless, some national advisory
committees, such as those of
Austria, France, Germany, and Sweden, have
recommended that their citizens minimize
exposure to EMFs. The recommendations have
included using hands-free mobile phones to
decrease exposure of the head to EMFs, keeping

12. At the end..
Gadgets make our life
easier,enjoyable,luxarious.
But excessive use is harmful.

13. WE ARE GRATEFUL TO
OUR FRIENDS,
WICKIPEDIA
AND OUR DEAR TEACHER MRS. SHYANAL
AND H.O.D OF OUR SCHOOL OF IT