Translate from Ukrainian into English.

1.Загалом існують чотири різновиди сканерів: сканер для плівочних матеріалів, портативний сканер, планшетний сканер та сканер барабанного типу.

2. Сканери для плівочних матеріалів – це невеликі настільні сканери, які використовуються для сканування 35 мм плівки та слайдів.

3. Портативні сканери – це обладнання малого розміру, яким ви, тримаючи його в руці, проводите по зображенню.

4. Планшетні сканери зазвичай не настільки якісні, як сканери барабанного типу.

5. Планшетні сканери можуть сканувати оригінали, які мають різну товщину, а деякі здатні сканувати трьохмірні об’єкти.

II. Retell the text “Types of Scanners”.

III. Rendering.

Read the text and translate it using a dictionary.

 

How does the scanner work?

To begin a scan, a document or item is typically placed on a glass surface and the cover is then closed to prevent damage to the lens. The scanner scans the document and creates a duplicated image and then saves it in a folder on the laptop or personal computer. Some scanners offer software programs that allow users to manipulate or change features on the document, such as reduce the contrast, adjust the color and even merge documents.

A computer scanner is typically connected to a PC or laptop so that the scanned items can be transferred to the user's desktop, sent to another recipient via email or even printed off and duplicated. Many times a user may need a page from a manual or a recipe copied, so by scanning the item, they can easily share this information with others. Some scanners are portable and can be utilized in any location.

If the scanner is attached to a printer, it can simply scan the image and then make the desired amount of copies. If the scanner is by itself, it can be attached to a computer via a USB cord and the signal through the cord will send the scanned material to the desktop. If a high resolution printer is set up to receive the scanned document from the scanner or the computer, it will print off documents and items that were scanned just the same as if it were to be copied from a copy machine. Scanners can also scan in color so that the user can receive the added benefit of having professional, high-quality image results.

A scanner is similar in concept to a digital camera in that they both convert light (analog signals) into digital data that computers can handle for further image manipulation.

A scanner is most commonly used to digitize traditional (non-digital) photo prints or other printed graphics for long-term archiving or viewing on the computer monitor (or on a TV). A scanner will also transform printed/handwritten documents into editable/searchable text on the computer and scanning film and/or slides, which can be particularly useful for graphic artists and photographers, for example. With a scanner, a world of digital art possibilities is right at your fingertips!

Make up a plan in the form of questions.

Give а summary of the text according to your plan in a written form.

IV. Comprehensive skills

Read and remember.

two-dimensional motion – двохкоординатне переміщення, двохмірне переміщення

supporting surface - опорна площина

button - кнопка

 

Listen to the text “Mouse” and try to understand it.

 

Read these statements and answer if they are true or false?

1. In computing, a mouse is a calculating device.

2.. Physically, a mouse consists of a small case, held by the tail, with two eyes.

3. The mouse sometimes features other elements, such as "wheels", which allow the user to perform various system-dependent operations.

4. The name mouse, originated at the Stanford Research Institute.

5. The first marketed integrated mouse — shipped as a part of a computer and intended for personal computer navigation — came with the Internet in 1960.

Listen to the text once again and answer the following questions.

1. What kind of pointing device is a mouse?

2. What does a mouse consist of?

3. Does the mouse's motion typically translate into the motion of a pointer on a display?

4. What does the name mouse derive from?

5. What parts of computer mouse resemble the real one?

 

V. Communicative skills

Topic for discussion: In what way do scanners facilitate office work? (Use additional materials ).

 

Unit 7

Topic: Cathode ray tube

I. Reading skills

Pre-reading tasks

a) You will read a text about Cathode ray tube.

· What do you know about Cathode ray tube?

· Could you name some of the devices of entering data?

b) Read and remember the following words and word combinations used in their specialized meanings.

 

cathode ray tube катодно-променева трубка

negatively charged cathode негативно заряджений електрод

electron gun електронна пушка

phosphor dots фосфорні точки

dot pitch розмір точки екрану

deflect відхиляти

Read and translate the following text into Ukrainian.

Cathode ray tube

CRT Computer display pixel array (right).The CRT or cathode ray tube is the picture tube of a monitor. The back of the tube has a negatively charged cathode. The electron gun shoots electrons down the tube and onto a charged screen. The screen is coated with a pattern of phosphor dots that glow when struck by the electron stream. Each cluster of three dots, one of each color, is one pixel.

The image on the monitor's screen is usually made up from at least tens of thousands of such tiny dots glowing on command from the computer. The closer together the pixels are, the sharper the image on screen can be. The distance between pixels on a computer monitor screen is called its dot pitch and is measured in millimeters. Most monitors have a dot pitch of 0.28 mm or less.

There are two electromagnets around the collar of the tube which deflect the electron beam. The beam scans across the top of the monitor from left to right, is then blanked and moved back to the left-hand side slightly below the previous trace (on the next scan line), scans across the second line and so on until the bottom right of the screen is reached. The beam is again blanked, and moved back to the top left to start again. This process draws a complete picture, typically 50 to 100 times a second. The number of times in one second that the electron gun redraws the entire image is called the refresh rate and is measured in hertz (cycles per second). It is common in television or very early computer equipment, to use a technique called interlacing, in which all the odd-numbered lines of an image are traced, and then all the even-numbered lines; the circuitry of such an interlaced display need be capable of only half the speed of a non-interlaced display. An interlaced display, particularly at a relatively low refresh rate, can appear to some observers to flicker, and may cause eyestrain.

 

3. Find the answers to the questions:

1. What does the abbreviation CRT stand for?

2. How does the CRT work?

3. What is the image on the monitor's screen usually made from?

4. What technique is commonly used in television or very early computer equipment?

5. How does the electron beam move in the tube?

Complete the sentences.

1. The CRT or cathode ray tube is …

2. The electron gun shoots …

3. The screen is coated with …

4. The distance between pixels on a computer monitor screen is called …

5. There are two electromagnets around the collar of the tube which …

Match the following English words with their Ukrainian equivalents.

Аспектне відношення, редагування, точність відтворення кольору, параметри комп’ютера, відстань між точками, фосфорна точка, електронна пушка, негативно заряджений катод, відхиляти(ся), катодно-променева трубка.

True or false statements.

1. The back of the cathode ray tube has a positively charged anode.

2. The screen is coated with a fabric that glows when struck by the electron stream.

3. Most monitors have a dot pitch of 1 m or even more.

4. The beam scans across the top of the monitor from right to left.

5. The number of times in one second that the electron gun redraws the entire image is called the refresh rate and is measured in hertz (cycles per second).