Scanner: The eyes of your computer
What does a scanner do ?
A scanner converts text or picture ino electronic codes that can be manupulated by the computer.
In a flatbed scanner, the paper with the image is placed down on a glass screen similar to a photocopier. Beneath the glass are the lighting and measurement devices. Once the scanner is activated, it reads the image as a series of dot and then generates a digitized image that is sent to the computer an stored sa a file. The manufacturer usually include software which offers different ways of treating the scanned image.
A colour scanner operates by using three rotating lamps, each of which has a different coloured fitter: red, green and blue. The resuting three separate images are combined into one by appropriate software.
Từ vựng (Vocabulary):
- Convert = transform: chuyển đổi
- Capture = store: lưu trữ
- image = picture: hình ảnh
- favourite: ưa thích
- scanner: máy quét
- definition: định nghĩa
- work = operate = run: hoạt động
- manipulated = process, solve: xử lý
- similar to: tương tự
- beneath: bên dưới
- flaced face down: úp xuống
- devices: thiết bị
- measurement: đo đạc
- file: tập tin
- once the: một khi
- activated: kích hoạt
- series: 1 chuỗi
- generate: tạo ra
- manufacturer: nhà sản xuất
- include: kèm theo
- rotate = move in cirles: xoay tròn
- separate: riêng lẻ
- practical approach: tiếp cận mang t/c thực hành
- description: miêu tả
- collection: tập hợp
- organization: tổ chức
-------- Written by: Graphic of TTT - Thạch Trương Thảo -------
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