Тема 6 Принцип роботи сканерів та цифрових камер. - part 12

1 Прочитайте та вивчіть терміни (усно)

to scan – сканувати;

scanner – сканер;

bar code scanner – сканер для зчитування штрих-коду;

flatbed scanner – планшетний сканер;

slide scanner – слайд-сканер;

hand-held scanner – кишеньковий сканер;

virus scanner – програма пошуку вірусів;

a series of dots – ряд крапок;

to recognize the characters – розпізнавати символи;

image – зображення;

image scanner – програма сканування зображення;

scanning - пошук, перегляд, сканування;

scanner glass – скло сканера;

rotating lamps – лампи, що обертаються ;

OCR (optical character recognition) – оптичне розпізнавання символів;

resolution – роздільна здатність;

lighting and measurement devices – пристрої освітлення та вимірювання;

transparent image – прозоре зображення;

convenient – зручний;

display image – відображення / виведене зображення;

versatile – універсальний, різноплановий;

to convert – перетворювати;

a laser beam –лазерний промінь;

2 Перекладіть текст на українську мову. (письмово)

SCANNERS

Scanners provide a capability for direct data entry into the computer system. The major advantage of this direct data entry is that humans do not have to key the data. This leads to faster and more accurate data entry. The two major types of scanners are optical scanners and magnetic-ink character recognition devices.

Optical scanners are input devices that can "read" data recorded on paper. The scanning techniques used involve a light source and light sensors; thus, they are called optical devices. The data to be scanned may be typed or handwritten characters, data-coded as pencil marks, or data-coded as bars. The common optical scanner devices are called optical character readers, optical mark readers, and bar-code readers.

An optical character reader (OCR) inputs data by using optical scanning mechanisms that can detect or scan alphabetic and numeric characters printed on paper. If the data are typewritten, they must be typed using a special type font, called an OCR font. Examples of the use of OCR devices include the scanners used by the Postal Service to aid in sorting bulk mail, and as first-draft input for word processing system.

Magnetic-ink character recognition (MICR) devices were developed to assist the banking industry. MICR devices speed up data input for the banking industry by reading characters imprinted on paper documents using a magnetic ink (an ink that contains iron oxide particles). Check and deposit form processing is the largest application of MICR.

3 Прочитайте та перекладіть діалог. Заповніть пропуски відповідними словами із списку. (письмово)

Active words: resolution, versatile, to recognize, OCR, a laser beam, software, desktop, T-shaped, photocopier, databases, word processor;

TECHNOLOGIES USED IN SCANNERS

Student: What sort of technology is used in scanners?

Vicky: Well, a scanner is a bit like a (1) … . You put the image you want to copy face down on the glass plate of the scanner, start the program, and (2) … reads the image in horizontal lines. This image is then sent to the computer where you can see it, changing it as you want.

Student: What about text? Can you scan text?

Vicky: Yes, you can, but you need special (3) … called OCR - optical character recognition. This interprets the text letter-by-letter and enables the computer (4) … the characters.

Student: Why do people need to scan text?

Vicky: Well, text that's been scanned can be stored as data in (5) …, or edited with a (6) ….

Student: Eh, what types of scanners are there?

Vicky: Well, there are three basic types: flatbed scanners, slide scanners and hand-held scanners. Flatbed scanners are built like a photocopier and are for use on a (7) … . They can scan text, colour pictures and even small three-dimensional objects. They are very convenient and (8) … . Slide scanners are used to scan 35 mm slides or film negatives. They work at very high (9) …, so they are more expensive than flatbeds. Hand-held scanners are small, compact and (10) … . The scanning head is not as wide as the one in a flatbed - they can only copy images up to about 4 inches wide. They are used for capturing small pictures and logos. They are very cheap, but their appeal has diminished because they are not very useful for (11) …, scanning in colour images can be a laborious process.

4 Прочитайте та вивчіть правила (усно)

COMPOUND ADJECTIVES (1)

Compound adjectives are made up of two words, normally with hyphens between them. The second part is often a past participle:

A menu-driven program lets you select a command from a menu.

A voice-activated product is activated by the user's voice.

Object-oriented programming is based on objects and their effects on each other, rather than on a series of instructions.