Your computer screen
in pairs, discuss these questions.
1what type of display do you have: a cathode ray tube or an lcd flat screen?
2what size is the screen?
3how can you change the picture using the controls?
4can you watch tv on your pc monitor?
2.
how screen displays work
complete these definitions with words from the box. then read the text on page 33 and check your answers.
resolution pixel aspect ratio colour depth video adapter plasma screen
- the smallest unit on a display screen or bitmapped image (usually
a coloured dot)
- an expansion card that generates the video signal sent to a
computer display
- the width of the screen in proportion to its height
- a i so ca 11 ed gas discharge display
5 - the number of pixels contained in a display, horizontally and
vertically
- the number of bits used to hold a colour pixel; this determines
the maximum number of colours that can be displayed
read the text again and answer these questions.
1 what do crt and lcd stand for?
2 how is the screen size measured?
3 what technology is used by active-matrix lcds?
4 which unit of frequency is used to measure the brightness of a display?
5 what substance produces light and colour when hit by electrons in a crt monitor?
6 what are the three advantages of oled displays?
Объяснение:
Решить . report the sentences using introductory verbs 1. “don’t forget to buy milk! ” said antonio to lucia. (remind, using infinitive) 2. “you shouldn’t go into the water” said the coast guard. (advise against) 3. “i’ll go to france on holiday” said john. (decide, using infinitive) 4. “i think you should go to the dentist” julie said to tom. (advise, using infinitive) 5. “watch out for the weak bridge” he said. (warn, using ‘about’) 6. “you should apply for the job” said jack to stella. (encourage) 7. “okay, keiko can go to the party” said keiko’s mum. (agree, using clause) 8. “the class will start later on tuesdays” said the teacher to us. (explain + clause) 9. “it’s a great idea to go to the beach” said maria. (recommend + verb-ing) 10. “don’t cross the road there” she said to the children. (warn, using infinitive)