33. In pairs, practice giving advice about how to use a monitor safely using should/shouldn’t or It’s a good/bad idea to… Look at these guidelines for help.

1 Don’t open the monitor. It’s dangerous.

2 Don’t stare at the screen for long periods of time.

3 Position the monitor at eye level or just below.

4 Leave enough space behind the monitor for unobstructed movement.

5 Don’t sit neat the sides or back of CRT monitors. Use LCD screens instead –they’re free from radiation.

6 Keep the screen clean to prevent distorting shadows.

An Ergonomic School or Office

34. You have been asked to write a list of guidelines for making your school or office more ergonomic. Look at the definition of ergonomics

Ergonomics – the study of how people interact safely and efficiently with machines and their work conditions

and then write an email to your teacher/manager explaining your guidelines. Consider 1-8 below.

1. Physical layout of the work site: desk areas, computer equipment, filing cabinets, etc.

2. Lighting (overhead lights, desk lamps), glare and ventilation

3. Computer and office furniture: ergonomic chairs and desks

4. User-friendly and ergonomic devices: keyboards, mice, monitors, wrist rests, copyholders, etc.

5. Location and features of telephones

6. Layout of cables and switches for a wired network

7. Wireless internet access and wireless network

8. Maintenance and technical repairs

35. Listen to Tony Clark, an expert in computer ergonomics, talking to some office workers about health and safety. What health problems associated with computer use do the office workers mention?

36. Listen again and complete these extracts:

1. Get a good chair, one that ________________ your lower back and is _______________ .

2. Make sure your feet rest firmly________________ or on a footrest.

3. Position the keyboard _______________ your elbows, with your arms _______________ the work surface.

4. ... position the monitor at, or just below _________________ .

5. You should sit at _________________ from the front of the monitor, about 50 to 70 centimeters away.

6. ... a kind of stand that lets you move the monitor _________________ , so you can use it at the correct angle and height.

37. Match the extracts above (1-6) with the correct parts of the diagram (a-f).

Unit III Storage Devices

Active Vocabulary

storage- medium (pl. media) - capacity- media capacity- data access time- per bit - to transfer- archival storage - to depend (on)- to rotate- reason- solid-state device - magnetic core- bipolar semiconductor- metal-oxide semiconductor (MOS)- randomly - random-access memory (RAM)- sound recording- to arrange- tape device- to range- magnetic disc storage - moving-head device- predominant - flexible- floppy disk - to meet the demands -

запоминающее устройство (ЗУ) носитель; среда ёмкость; объём (памяти); пропускная способность ёмкость носителя время доступа к данным на единицу информации передавать(ся); переносить(ся); пересылать(ся) архивное ЗУ; архивная память зависеть от; полагаться; рассчитывать на вращать(ся); чередовать(ся); сменять(ся) причина; основание; довод; обосновывать; делать вывод твердотельный прибор магнитный сердечник биполярный полупроводник структура металл-оксид-полупроводник произвольно оперативное ЗУ (ОЗУ) звукозапись размещать; располагать; устанавливать; монтировать ЗУ на магнитной ленте классифицировать; располагать в порядке; находиться в диапазоне ЗУ на магнитном диске устройство с двигающейся головкой преобладающий; доминирующий гибкий; настраиваемый; изменяемый гибкий диск; ЗУ на гибком диске отвечать запросам

1. Read the text. Explain words and word expressions in bold.