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English first additional language

Grade 7

Module 9

Debating in class

  1. Class Debate

Ask you teacher to help you organise a class debate, in which you discuss the negative and positive aspects of machines. Prepare it in writing in space provided.

One group must speak in favour of a machine-orientated lifestyle, motivating their statements.

The other group must motivate their views on the disadvantages of being ruled by machines.

LO 2.4.4

2. Computers – complicated or not?

Do you have access to a computer?

Have you ever wondered how a computer works?

In pairs, read the following description and try to visualise what is being explained.

Electronic brains. How do computers work?

In many ways the workings of a computer can be compared to some of the functions of the human brain. A computer cannot think for itself, but it has a remarkable memory, it can organise and process information and it can solve problems.

What happens when you have a problem to solve? Let's imagine that you are looking for a telephone number. As you look through the directory, your eyes will send messages along the nerves to your brain, which will find the right page and identify the person you want from an alphabetical list of thousands of names. When you have found the number, your brain will send the message along other nerves to your fingers or your voice, depending on whether you want to dial or write the number, or tell it to somebody else. This process can be illustrated in this way.

A computer solves problems in much the same way. First of all, information is fed into the computer by an input device, such as a keyboard , a punched card or a light pen . These transmit the information to the computer's 'brain', the central processing unit (CPU) along electrical circuits known as buses . These are like the nerves in our bodies. The CPU consists of three parts; the information store, or main memory ; the arithmetic unit , which does all, the calculations; and the control , which directs and organises the flow of information inside the computer, rather like traffic along different roads. Once the computer has solved the problem, the information is fed out through output devices, such as a monitor screen , or a print-out or a punched-tape machine .

This diagram illustrates the process.

The miracle chip

The first computers were large because they contained numerous electronic components, and metres and metres of wiring. Today we have microcomputers that have been made possible by the invention of the silicon chip - the “brain cell” of the microcomputer. A silicon chip is a razor thin crystal, so small that several will fit on the head of a match. If you were to examine a silicon chip under a powerful microscope, you would find that it has thousands of electrical circuits printed on its surface. Nowadays, one minute (small) chip can do the work of one of the earlier computers, which had to be so large that it would have filled a big cupboard. If cars had reduced in size at the same rate as computers, we should now be able to fit several large limousines on the head of a pin!

Questions & Answers

how can chip be made from sand
Eke Reply
is this allso about nanoscale material
Almas
are nano particles real
Missy Reply
yeah
Joseph
Hello, if I study Physics teacher in bachelor, can I study Nanotechnology in master?
Lale Reply
no can't
Lohitha
where is the latest information on a no technology how can I find it
William
currently
William
where we get a research paper on Nano chemistry....?
Maira Reply
nanopartical of organic/inorganic / physical chemistry , pdf / thesis / review
Ali
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
hey
Giriraj
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
has a lot of application modern world
Kamaluddeen
yes
narayan
what is variations in raman spectra for nanomaterials
Jyoti Reply
ya I also want to know the raman spectra
Bhagvanji
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
if virus is killing to make ARTIFICIAL DNA OF GRAPHENE FOR KILLED THE VIRUS .THIS IS OUR ASSUMPTION
Anam
analytical skills graphene is prepared to kill any type viruses .
Anam
Any one who tell me about Preparation and application of Nanomaterial for drug Delivery
Hafiz
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, English first additional language grade 7. OpenStax CNX. Sep 09, 2009 Download for free at http://cnx.org/content/col11019/1.1
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