1. English language 2
Lessons 5 - 6

2. 5 - Input Devices - the Eyes of Your PC
Scanners
input device
peripheral
flatbed
film scanner (film negatives/35 mm slides)
hand-held scanner
pen scanner
barcode scanners
resolution (dpi)
OCR (Optical Character Recognition)

3. 5 - Input Devices - the Eyes of Your PC
Digital Camera
flash memory card
Digital Video Cameras and Webcams
digital video (DV) camera
video editing software
web camera - webcam
video conferences
megapixels
USB/FireWire
24-30 frames per second
headset

4. 6 - Output Devices: Printers
Technical Details
printer
printout
printer driver
print spooler
resolution (dpi)
pages per minute (ppm)
print server

5. 6 - Output Devices: Printers
Types of Printers
dot-matrix printer
pins
impact printing
ink-jet (bubble-jet) printer
cartridge
multi-function printers
laser printer
toner
page description language (PDL)
imagesetter
plotter

6. Modal Verbs should We use should to talk about a good thing to do:
You should be more careful!
Should I wear a tie?
You should not ( shouldn’t) drive fast in the rain.
The comparison of must and should:
We use must to talk about what is necessary.
I must get a new passport if I want to travel.
We use should to talk about what is good.
I should eat more fruit, although I do not like it.

7. Modal Verbs can and could
We use can to talk about someone’s ability to do something.
I can speak Italian.
Can you sing?
I can read Spanish, but I cannot (can’t) speak it.
To talk about the past, we use could.
His son could talk when he was onliy thirteen months old.
Could you avoid such a situation?
I could not (couldn’t) understand the professor yesterday.

8. Modal Verbs can and could
can does not have an infinitive or a past participle.
Instead we use (to) be able to or been able to + infinitive.
I want to be able to speak English.
I have never been able to play footbal.
I wll be able to drive.

9. Modal Verbs can and could - requests
We can ask people to do things (make requests) with can you...? This is informal, and we often use it when we are talking to friends, and also in shops, restaurents, etc.
Can you lend me a pencil, please?
Can you bring me some more bread?
Could you...? is more formal and polite, and we often use it when we are talking to strangers, older people, teachers or bosses.
Excuse me, Mr Smith, could you lend me a stamp?
Could you possibly watch my luggage while I get a coffee?

10. Questions?