5. Answer the following questions:

1. What electronic device will allow you to keep an eye on all the weather conditions? 2. What is a card reader? 3. Where can you set up wireless camera? 4. What devices are good for security reasons and they are also good for checking to see what the weather is? 5. Should or should not every home have one of these electronic devices? 6. The Roomba seeks out dirt and goes all over the floor searching for it, doesn’t it? 7. What refers to the transmission of video/audio? 8. May the weather man know the current weather conditions at the weather station? 9. Where can you attach them? 10.There are several electronics devices that are perfect for any home, are not there?

6. Match the first part (1-7) of the sentence with the second part (a-g):

1. Electronic devices…

2. The Roomba -…

3. "Wireless" - …

4. The digital door lock …

5. The weather man …

6. Some wireless security cameras …

7. The pizza delivery guy…

a) refers to the transmission of video/audio.

b) are battery-powered.

c) are good for security reasons and they are also good for checking to see what the weather is.

d) is basically a card reader.

e) will be able to easily spot your home as well.

f) seeks out dirt and goes all over the floor searching for it. 

g) may know the current weather conditions at the weather station.

7. Read the text, translate and entitle it.

Today's robotic vacuums are a far cry from the first models that you had to track down, stranded somewhere in your house, by their melancholy, "I'm out of power" beeping. The latest products clean your house, remember the layout to increase efficiency, dump their own dirt in a receptacle and find their way back to the charging station so they can rejuice. Roombas run on a rechargeable NiMH battery. The Roomba Red battery pack is rated at 3 amp-hours and takes about seven hours to fully charge to about 18 volts. Some of the more recent Roomba models have cut that charge time down to about three hours. A full charge equals approximately two hours of cleaning time, which in the Roomba world means vacuuming three medium-size rooms before it needs to rejuice. The mobility system consists primarily of two motor-driven, tracked wheels. Roomba steers by alternating the power supplied to each wheel.

The first thing Roomba does when you press "Clean" is to calculate the room size. iRobot is a bit hazy on how it does this, but HowStuffWorks believes that it sends out an infrared signal and checks how long it takes to bounce back to the infrared receiver located on its bumper. Once it establishes the size of the room, it knows how long it should spend cleaning it.

While Roomba is cleaning, it avoids steps (or any other kind of drop-off) using four infrared sensors on the front underside of the unit. These cliff sensors constantly send out infrared signals, and Roomba expects them to immediately bounce back. If it's approaching a cliff, the signals all of a sudden get lost. This is how Roomba knows to head the other way. When Roomba knocks into something, its bumper retracts, activating mechanical object sensors that tell Roomba it has encountered an obstacle. It then performs (and repeats) the sequential actions of backing up, rotating and moving forward until it finds a clear path.

8. Render the text: Electronic Devices for the home.

UNIT 9

Pre-text exercises:

1. Make the collocations with the following words: Do, keep, make, pay, save

Business, a difference, interest, space, cash, a promise, quiet, money, a mistake, energy, the housework, attention, time, the cooking, a noise, control

2. Find the Ukrainian equivalents for the following English words and word

combinations :

a) burglar alarm, part of the circuit, opposite charge, a flashlight, detect, the act of intrusion, a magnetic sensor, a battery, a magnet

b) охоронна сигналізація; магніт; виявляти; магнітний датчик, чутливий елемент; ручний електричний ліхтар; частина схеми; протилежний заряд; акт втручання; акумулятор

3. Which of these words from the list are similar in your language? Do they mean the same?

Most, electricity, act, category, sensor, a magnet, slide, control, box, monitor, glass, opposite, sort

4. Read the text and translate it: How Burglar Alarms Work

The most basic burglar alarm is a simple electric circuit built into an entry way. In any circuit, whether it's powering a flashlight or a computer, electricity only flows when you give it a path between two points of opposite charge. To turn the electricity on or off, you open or close part of the circuit. To open or close a flashlight circuit, you simply throw a switch. In a burglar alarm, the switch detects the act of intrusion - opening a door or window. These sorts of alarms are divided into two categories:

In a closed-circuit system, the electric circuit is closed when the door is shut. This means that as long as the door is closed, electricity can flow from one end of the circuit to the other. But if somebody opens the door, the circuit is opened, and electricity can't flow. This triggers an alarm.

In an open-circuit system, opening the door closes the circuit, so electricity begins to flow. In this system, the alarm is triggered when the circuit is completed. There are a number of ways to build this sort of circuit into an entry way. Closed circuits are normally a better choice than open circuits because an intruder can deactivate the open circuit by simply cutting the connected wires. A magnetic sensor in a closed circuit consists of a few simple components. For the most basic design, you need: a battery powering a circuit, a spring-driven metal switch built into a door frame, a magnet embedded in the door, lined up with the switch, a separately-powered buzzer with a relay-driven switch.

When the door is closed, the magnet pulls the metal switch closed so the circuit is complete. The current powers the relay's electromagnet, so the buzzer circuit stays open. When you move the magnet by opening the door, the spring snaps the switch back into the open position. This cuts off the current and closes the relay, sounding the alarm. You can also build this sort of system into a window. If an intruder pushes a window open, the magnet slides out of line with the switch, and the buzzer are activated.

Another simple burglar alarm uses a small button as the switch. The button is embedded in the door frame, so closing the door pushes it in. When somebody opens the door, the button is released, changing the circuit and sounding the alarm. With just a battery and buzzer, these designs make for fairly flawed security systems. After all, the burglar only needs to close the door again to turn the buzzer off. That's why most modern burglar alarms incorporate another piece into the circuit -- the control box. The control box is hooked up to one or more alarm circuits, but it also has its own power supply. It monitors the circuits and sounds the alarm when they are closed or opened (depending on the design). But once the alarm is triggered, the control box won't cut it off until somebody enters a security code at a connected keypad. For added security, the control box is usually positioned in an out-of-the-way spot, so the intruder can't find it and attempt to destroy it.

Using this basic concept, you can create all sorts of alarm systems. Just imagine what a burglar might do to break into a house, and then turn that action into the circuit switch. For example, an intruder might break through a window, so you could make the glass itself a circuit. The easiest way to do this is run a current through a thin line of foil wire affixed to the surface of the glass. If a burglar breaks the glass, the circuit is broken, and the alarm is triggered. Floor mats are another simple option. A basic floor mat uses an open circuit design with two metal strips spaced apart. When somebody steps on the mat, the pressure pushes the two metal strips together, completing a circuit.

Post-text exercises: