The traditional desktop computer
The original IBM PC is the prototype for all desktop computers. The main box, the console, sits flat and square on the desktop. The monitor perches on top of the console, and the keyboard sits in front. Despite this historical tradition, most PCs no longer resemble the IBM desktop original.
The most popular computer configuration now is the minitower model, which is like a desktop model turned on its side (see Figure 3-2). The minitower is more versatile than the old desktop style; you can set the console right next to the keyboard and monitor (as shown in Figure 3-2), or you can set the minitower on the floor and out of view.
PC is an acronym for personal computer. This name comes from the first IBM model, the IBM PC (International Business Machines Personal Computer).
- Before the IBM PC, personal computers were called microcomputers. It was a disparaging term because other computers of the day were much larger. They were called minicomputers and mainframes. Powerful things.
- The minitower is named that way because the original on-its-side PC was dubbed the tower model. Minitowers are more compact than full-size towers, and they lack much of the internal expansion room in larger models.
- Smaller desktop models are still available. They’re usually called smallfootprint computers. The footprint in this case is the amount of space the computer occupies on your desk.
- Small-footprint computers lack expandability options. For example, if you want AGP graphics, you may not find that expansion option in a small-footprint computer case.
- Some new-model PCs have both the console and the monitor in the same box. These systems don’t yet have an official nickname.
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Mainframes
The final computer category I describe is the most ancient, but not gone or forgotten: the mainframe, or “big iron,” that used to do all the computing work before personal computers became popular in the late 1970s — and again at the turn of the 21st century.
Though mainframe computers were once thought to be doomed relics of the past, they’re now in high demand and selling better than some home-model computers.
Of course, as with high-end workstations and file servers, you probably won’t be purchasing a mainframe to help you send e-mail or balance your checkbook.
But, it’s a category of computer, so I had to list it here. Consider the term fodder for your next cocktail party.
- Actually, it would be kind of cool to have a mainframe, although I don’t know anyone on my street whom I could impress with the thing.
- Mainframes are also known as big iron.
- Supercomputer is another classification of computer, although it’s really like a mainframe. A supercomputer is specifically designed to do many tasks quickly. To create a supercomputer, a series of desktop computers are linked together so that they operate as one unit.
(Chapter 3: Computers from A to Z)
Listening
a) Listen to Part 1 of this conversation between a shop assistant and a customer. Tick (√) the correct the correct answers to these questions:
Buying a computer
1) The customer wants a computer for:
[ ] writing
[ ] graphics
[ ] games
[ ] Internet
[ ] video
2) A multimedia computer provides:
[ ] sound
[ ] graphics
[ ] animation
[ ] telephone
[ ] video
b) Listen to Part 2 of the conversation. In column A, tick the hardware items named:
| A | B | Device |
| Multimedia computer | ||
| Multimedia notebook | ||
| Subnotebook | ||
| Laptop | ||
| Handheld | ||
| Printer | ||
| Monitor | ||
| modem |
C) Listen again to the conversation. In column B, Tick the items the assistant recommends.
Portable Computers
Vocabulary
template
to clip
clipboard
pattern
to recognize
recognition
pixel
to refer
to be referred
reference
reference book
to convert
conversion
primary
transmit
transmission
charge
free of charge
to charge
to recharge
rechargeable
to launch
feature
advice
to advise
advisable
survey
similar
a) chose the correct translation:
1) advice
| a) заряд | b) совет | c) запуск | d) обзор |
2) charge
| a) заряд | b) совет | c) запуск | d) обзор |
3) to convert
| a) вырезать | b) преобразовать | c) относиться | d) советовать |
4) to clip
| a) вырезать | b) преобразовать | c) относиться | d) советовать |
5) reference book
| a) заряд | b) обзор | c) справочник | d) образец |
6) primary
| a) обзор | b) первичный | c) справочный | d) распознавание |
7) pattern
| a) заряд | b) обзор | c) справочник | d) образец |
8) recognition
| a) распознавание | b) заряд | c) совет | d) запуск |
9) launch
| a) заряд | b) совет | c) запуск | d) обзор |
10) survey
| a) заряд | b) совет | c) запуск | d) обзор |
b) Match the words with their meanings:
| 1. to recognize 2. to convert 3. to launch 4. to advise 5. to refer 6. to recharge 7. template 8. similar 9. feature 10. primary | a) ссылаться b) запустить c) зарядить d) подобный e) первичный f) преобразовать g) шаблон h) черта i) распознать j) советовать |
с) Match the words with their definitions:
| 1) clipboard 2) feature 3) template 4) transmission 5) pixel 6) reference 7) conversion 8) rechargeable 9) advisable 10) similar | a) the smallest single point on a visual display screen b) wise, sensible, recommended c) a file or memory area where computer data is kept for a short time while the user cuts or copies sth from an open document d) something important, interesting or typical of a place or thing e) like, of the same sort f) a data item that contains information such as an address or index which shows where another data item may be found g) a change, especially from one system to another, or from one form to another h) the action of sending sth out from one person, machine or thing to another i) that is able to be filled with electricity each time the electricity it contains is used j) a plan of sth that is used as a model for producing other similar examples |
Reading
a) Before reading the text, match the words with their definitions:
| a clipboard b stylus c screen d grid e voltage f pixel g template | l surface on which pictures or data are shown 2 electrical force 3 pattern used as a guide for creating letters 4 individual dot on a computer screen 5 network of lines crossing at right angles 6 pointed implement for drawing or writing 7 portable board with a clip at the top for holding papers |
b) Read the text and try to explain the heading:
Delete Keys – Clipboard Technology
FOR THE LAST GENERATION, Silicon Valley and Tokyo have been working to design computers that are ever easier to use. There is one thing, however, that has prevented the machines from becoming their user-friendliest: you still have to input data with a keyboard, and that can require you to do a lot of typing and to memorize 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 market only this year. Clipboard PCs - which, as their name suggests, are not much bigger than an actual clipboard - replace the keyboard with a liquid crystal display (LCD) screen and an electronic stylus. Users input data by printing individual letters directly 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 particular 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 point on the grid, the voltage is slightly different. When the stylus - 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 position of the stylus is monitored several hundred times a second, so as the stylus moves across the glass, whole strings of pixels are activated.
‘What we do is sort of connect the dots,’ says Jeff Hawkins, 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 more. Every time this happens - and it happens a lot when somebody is printing - the software assumes that one letter or number has been written. The pixel positions of this fresh character are then passed on to the computer’s pattern recognition software, which instantly identifies the letter or number written.
The software does this by first cleaning up the character - smoothing out crooked lines and removing errant dots. The remaining lines and curves are then compared with a series of templates in the computer’s memory that represent hundreds of thousands of different versions of every letter in the English alphabet and all ten numerals. When the computer finds the closest match, it encodes the character in memory and displays it on the screen as if it had been typed. The entire process takes just a fraction of a second. To delete a word, you simply draw a line through it. To move to the next page, you flick the stylus at the bottom of the screen as if you’re flicking the page of a book.
There are a handful of clipboard computers now on the market, including GRIDPad, which is sold in the US; Penvision, manufactured by NCR and sold around the world; and Sony's Palmtop and Canon’s Al Note, both sold only in Japan. IBM and Apple are also pouring millions of dollars into the technology.
In addition to this hardware, a variety of software is also making its way to the market. Depending on the power of the computer and the sophistication of the software, clipboard systems can be programmed to understand the particular quirks of a particular user's printing1; this is an especially useful feature in Japan, where elaborate kanji2 characters make up most of the written language. Improvements in software may soon allow machines sold in the US to understand not only printing but continuous script as well.
Given such flexibility, the designers of clipboard computers are predicting big things – and a big market – for their products. ‘There’s no doubt about it,’ says an optimistic Hawkins. `You’re going to own one of these things in the not-too-distant future’.
Notes:
1printing - (in this case) writing separated letters or numbers by hand
2kanji - Japanese script which uses Chinese characters
c) Look through the text and decide if the sentences are true (T) or false (F). Change the false sentences to make them true:
1 The Americans and the Japanese are working together to produce user-friendlier computers.
2 The clipboard computer was first sold twenty years ago.
3 On a clipboard, an electronic pen replaces the traditional keyboard.
4 In the GRIDPad system, when the pen touches the screen, it informs the computer and a liquid crystal pixel appears at that point.
5 The software decides that one character or number is complete if the tip of the stylus is not in contact with the screen for more than half a second.
6 The whole process of recognizing letters or numbers and printing them on the screen takes very little time.
7 There are many clipboard computers sold today which are all available everywhere in the world.
8 Clipboard systems can be made to understand any kind of writing.
d) Find synonyms:
1.understand
2.sold
3.covering
4.points
5.join
6.making even
7.not straight
8.made by mistake
9.move quickly and sharply
10.unique features
e) Complete the dialog using the information from the text:
A How big is a clipboard PC?
B _________________________
A Does it have a keyboard?
B _________________________
A How does the stylus work?
B _________________________
A How does the computer know when one letter or number is complete?
B _____________________________________________________
A And how does the computer recognize different letters?
B _____________________________________________________
A Can you delete a word after you have written it?
B Yes. _________________________________________________
A Are these systems capable of recognizing joined writing?
B _____________________________________________________
f) Read the extract from Dan Gooking’s book ‘Buying a Computer for Dummies’. Give a good translation of the extract, try to keep to the style of the author: