Unit 3 how a computer works

INGLES BASICO
UNIT 3: HOW A COMPUTER WORKS
RICARDO ANDRES HERNANDEZ CUCANCHON
084850492015
SEBASTIAN GARCIA NAGLES
084850652015
UNIVERSIDAD DEL TOLIMA
IDEAD
TECNOLOGIA EN GESTION DE BASES DE DATOS GRUPO 3
2015

True False
x
x
x
x
UNIT 3
How a computer Works (Part 1)
3.1 PAIR WORK
Work with another student. Ask these questions:
1. Have you got a computer?
Yes, I have
2. Do you know anybody who has got a computer?
Yes, I do.
3. What do people use computer for?
The people use computer for communicate, to learn.
4. Have you got a calculator?
Yes, I do.
5. How do you use a calculator?
First, we introduce the numbers, then choose the mathematical operation
and hope the result
3.2 LISTENING
A radio reporter is interviewing a man about computers.
A. Listen, and mark the words which you hear (6 appear in the interview and 4
do not)
Mouse Keyboard Data Printer Program
Memory Disks Information Input Monitor
B. Now listen again and say if the sentences about the man are true or false:
1. He has a computer……………………………………….
2. His secretary uses a computer………………………….
3. He’s an export manager…………………………………
4. His secretary writes letters on the computer…………..

True False
x
x
x
x
x
x
5. His secretary’s computer has a colour monitor……….
6. His brother works in a bank……………………………..
7. His neighbor works in a bank……………………………
8. He never uses a calculator………………………………
9. He doesn’t know how a calculator works………………
10.He thinks computers are impossible for him to
understand………………………………………………...
3.3 READING TEXT
A. Read the text below
First read the text without stopping, and try to get general idea of the
content. Then read it again more slowly, with a dictionary if necessary.
WHAT DOES A COMPUTER
Input, processing, output
The basic function of a computer is to process information, or data. A calculator is a
simple example. First you have to give the calculator information, in this case
numbers. Then you have to give it instructions, telling it what to do with the numbers
(add, subtract divide or multiply them). Finally, after it has «processed» the data, the
calculator will give you the answer. SO there are three steps in what the calculator
(which is a simple computer!) does: first, input (we put data in), second, processing,
and third, output (we obtain the results).
Keyboards, memory, monitors
A computer can work with numbers, pictures, or words. We give the computer input
through the keyboard or a mouse, and also thorough disks containing information.
The disks can be three and a half inches or five and a quarter inches, or a hard disk
which is usually inside the computer. The disks need a disk drive to send the
information on them to the computer’s memory. The information goes into the
computer’s memory and is processed, according to instructions contained in a
program. Computer programs are written in different kinds of computer languages;
some are low level languages, like assembler, and some are high level languages.
Like BASIC or PASCAL. We can see the results of the computer’s work (the output)
on a monitor, or the computer can send the output to a printer, which gives us the
results printed on paper. This is known as a hard copy. We can also save the output
on a disk.
So the three basic steps involved in computers are: input – processing – output.
Simple, isn’t it!
Answer
General idea
The computer uses three basic processes that are input (keyboard and
mouse), processing (hard disk, memory), output (monitor or printer).

B. Complete the sentences about the text:
1. Basically, a computer ... processes … information
2. Another word for information is ...data…
3. Data going into a computer is called …input ...
4. The results of the computer’s processing is called …output ...
5. Output can be saved on a …disk ...
6. We can see the output on a …monitor ... or get a print out which is
called a …printer …
3.4 VOCABULARY STUDY
A. Look at this list. Do you know all the words? If not, look them up in a
dictionary.
Age: Edad Keyboard: Teclado Program: Programa
Assembler: Ensamblador Memory: Memoria Processing: Procesamiento
Basic Monitor: Monitor To process: Procesar
Data: Datos Mouse: Raton To type: Escribir
Disk: Disco Output: Salida To save: Guardar
Disk drive: Unidad de disco Pascal Top speed: Velocidad máxima
Height: Altura Printer: Impresora Weight: Peso
Input: Entrada
B. Label the picture and the diagram. Label them, using these words.
Keyboard Computer Monitor Disk
Printer Disk drive Mouse Input
Output Processing
Input
Keyboard or
Mouse
Processing
Computer
Output
Monitor or
Printer

3.5 GRAMMAR WORK
A. Comparisons
Look at this information
Name Town Age Weight Height
John Smith London 23 67 Kilos 1.78
Mary Jones Leeds 19 58 Kilos 1.54
David Brown London 21 71 Kilos 1.83
Jane Fox Hull 28 55 Kilos 1.57
How many people live in London?
Answer: Two
Who is older, John or David?
Answer: John is older than David
Who is the youngest?
Answer: Mary is youngest than John, David and Jane
How many people weigh more than Mary?
Answer: Three people weigh more than Mary
Is Jane taller than David?
Answer: Yes, Jane is taller than David.
B. Work with a partner. Ask questions about the 4 people
C. Now look at this information:
Albert London 48 70 Kilos 1.67
Beatrice Leeds 20 58 Kilos 1.58
Karen Manchester 23 75 Kilos 1.83
Jill Cambridge 65 78 Kilos 1.82
John Worthington 39 68 Kilos 1.75
Jane Brighton 35 59 Kilos 1.74
Fiona London 40 58 Kilos 1.68

Katy Cambridge 38 57 Kilos 1.65
Sandy London 25 72 Kilos 1.79
Fred Manchester 17 64 Kilos 1.60
We put this information into a computer, using a data base program. We
then asked the computer to tell us all the name of the people who lived in
London
This is the output we got from a printer:
List for town=
«LONDON»
To get information about John, we typed:
List for name «John»
The data base program knows these signs:
= the same as > more than
< less than <> not the same as
This is the output we got when we typed
List for age < 30

What output would we get if we typed these instructions:
List for age < 50
List for weight > 70
List for height <> 1.75
What instructions would you give to find out?
Who is younger than 40
List for age < 40

Who is taller than
1.60
List for height > 1.60
Who is older than 23
List for age > 23
Who weighs more than 67 Kilos
List for weight > 67
Who is shorter than 1.65
List for height < 1.65
3.6 PROJECT: “Input, processing, output”
Make a table of information about 6 cars. Give the name, price, top speed, and fuel
consumption of each one.
Suppose this information was in a data base
Name Price Top speed
Fuel
consumption
Mercedes benz 77.000.000 120 Km/h 9.80 Km/l
Mustang 100.000.000 170 Km/h 10.70 Km/l
BMW 140.000.000 210 Km/h 11.40 Km/l
Mazda 89.000.000 140 Km/h 15.10 Km/l
Ford 81.000.000 130 Km/h 13.20 Km/l
Nissan 76.000.000 120 Km/h 17.20 Km/l
Write 5 instructions and the output you would get from each one
List for price < 90000000
Fuel
consumption
Mazda 89.000.000 140 Km/h 15.10 Km/l
Ford 81.000.000 130 Km/h 13.20 Km/l
Nissan 76.000.000 120 Km/h 17.20 Km/l

List for top speed > 150
Fuel
consumption
Mustang 100.000.000 170 Km/h 10.70 Km/l
BMW 140.000.000 210 Km/h 11.40 Km/l
List for top speed = 120
Fuel
consumption
Nissan 76.000.000 120 Km/h 17.20 Km/l
List for fuel consumption > 13
Fuel
consumption
Mazda 89.000.000 140 Km/h 15.10 Km/l
Ford 81.000.000 130 Km/h 13.20 Km/l
Nissan 76.000.000 120 Km/h 17.20 Km/l
List for price > 900000
Name Price Top speed Fuel
consumption
Mustang 100.000.000 170 Km/h 10.70 Km/l
BMW 140.000.000 210 Km/h 11.40 Km/l
3.7 GRAMMAR SUMMARY
See the grammar summary at the back of the book for an explanation of
The comparative and superlative

Unit 3 how a computer works

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