- •Is limited to a few words. However, the large amount of memory
- •If the computer divides the screen into a large number of
- •Ver, having to use special paper adds to the running costs and is
- •Impact printers by mechanical contact between print head and
- •It should include: a classifying sentence
- •If it is stored on rom chips,it comes into operation as soon as
- •Information.
- •Various editing facilities are also available. After the
- •Very closely,and I've found that purchasers' needs seem always to
- •3 Adjectives with two syllables may be like 1 or 2 above in that
- •Is printing - the software assumes that one letter or number has
- •Information on the screen and one to scan the keyboard for input.
- •In my opinion, there is no single `best` online service. The
- •In the 1980s, at least 100,000 laNs were set up in laborato-
- •Infected four copies of command.Com , the detonator is triggered.
3 Adjectives with two syllables may be like 1 or 2 above in that
they will add the ending -er and -est if they end in -y or -ly,
-ow, -le an -er.
Examples:
ДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Absolute Comparative Superlative
ДДДДДДДДДДДД ДДДДДДДДДДДДДД ДДДДДДДДДДДДДДДД
- y tiny tinier tiniest
speedy speedier speediest
- ly early earlier earliest
friendly friedndlier friendliest
- ow shallow shallower shallowest
narrow narrower narrowest
- er clever cleverer cleverest
ДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД
Quiz (Software systems)
Unit 6
1. What is a program designed to perform a specific function cal-
led ?
2. The ....... editor is a systems program that fetches required
systems routines and links them to the object module.
3. What is a DBMS ?
4. What does DTP stand for ?
5. What type of applications program is used for information ret-
rieval ?
6. What type of applications program is used for financial plan-
ning ?
7. A set of applications programs which can share the same data
is known as an .......... .
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8. What name is given to the set of programs which manages and
coordinates all the hardware and software ?
9. What type of programs are designed for particular situations
and are often written by the user ?
10. What is the title of the person is overall charge of a large
computer system ?
U N I T 7
Task 1
Discuss the following questions:
1. How small do you think computers can usefully become?
2. To what extent does the size of a computer influence what it
can be used for ?
Think of examples to illustrate your answer.
Task 2
Before reading the text, match these words with their defi-
nitions:
a clipboard 1 surface on which pictures or data are ashown
b stylus 2 electrical force
c screen 3 pattern used as a guide for creating letters
or characters
d grid 4 individual dot on a computer screen
e voltage 5 network of lines crossing at right angles
f pixel 6 pointed implement for drawing or writing
g template 7 portable board with a clip at the top for
holding papers
Task 3
Read the text and decide why the author chose the title De-
lete Keys. Can you suggest a better title ?
Delete Keys - Clipboard Technology
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For the last generation, Silicon Valley and Tokyo have been
working to design computers that are even easier to use. There is
one thing, however, that has prevented the machines from becoming
their user-friendiest: you still have to input data with a keybo-
ard, and that can require you to do a lot of typing and to memo-
rize a lot of elaborate commands.
Enter the clipboard computer, a technology that has been in
development for the last 20 years but took hold in the mass mar-
ket only this year. Clipboard PCs - which, as their name sug-
gests, are not much bigger than actual clipboard - replace the
keyboard with a liquid crystal display (LCD) screen and an elect-
ronic stylus. User input data by printing individual letters di-
rectly on the screen.
There are two technologies at work in a clipboard PC: one
allows raw data to get into the computer and the other allows the
computer to figure out what that data means. The first technology
relies principally on hardware and varies depending on the parti-
cular computer. In one system, marketed under the name GRIDPad,
the computer`s LCD screen is covered by a sheet of glass with a
transparent conductive coating. Voltage is sent across the glass
in horizontal and vertical lines forming a fine grid; at any po-
int on the grid, the voltage is slightly different. When the sty-
lus - which is essentially a voltmeter - touches the screen, it
informs the computer of the voltage at that point. The computer
uses this information to determine where the stylus is and causes
a liquid crystal pixel to appear at those coordinates. The posi-
tion of the stylus is monitored several hundred times a second,
so as the stylus moves across the glass, whole string of pixel
are activated.
`What we do is sort of connec the dots,` says Jeff Hawkings,
the creator of GRIDPad . `Users can then write whatever they want
on the screen with a kind of electronic ink.`
Making that writing comprehensible to the computer, however,
requires the help of some powerful software. When the stylus is
being used, the computer is programmed to look for moments when
the tip does not touch the screen for a third of a second or mo-
re. Every time this happens - and it happens a lot when somebody
