2. THE EYES OF YOUR COMPUTER
You can capture your favorite pictures using there different input devices:
• A scanner
• A digital camera
• Camcorder
3. SCANNER
A scanner “sees” images and convert the printed text or pictures into electronic codes that can
be understood by computer.
With a flatbed scanner, the paper with the image is placed face down on a glass screen similar
to photocopier. Beneath the glass are the lighting and measurement devices.
Once the scanner is activated, it reads the image as a series of dots and generates the digitized
image that is sent to the computer and stored as a file.
4. • A colour scanner operates by using three rotating lamps, each of witch has different
coloured filter : red, Green and blue. The resulting three separated images are combined
into one by appropriate software.
5. CAMERA
• A digital camera takes pothos electronically and converts them into digital data (binary
codes made up of 1s and 0s).
• It doesn’t use the film found in a normal camera, instead it has a special light-sensitive
silicon chip.
• Photographs are stored in the camera’s memory before being sent to the computer. Some
cameras can be also connected to a printer or a TV set. To make viewing images easier.
6. CAMCORDER
• A comcorder, or a digital video camera, records moving pictures and converts them into
digital data that can be stored and edited by a computer with special video editing
software.
• Digital video cameras are used by home users to create their own movies, or professionals
in computer art and video conferencing.
7. • They are also used to send live video images via the internet. Then they are
called Web cameras or webcams.
8. WEBCAM
• A webcam is a video camera that feeds its images in real time to a computer or computer network.
• Their most popular use is the establishment of video links, permitting computers to act as videophones
or videoconference stations.
• The common use as a video camera for the World Wide Web gave the webcam its name. Other popular
uses include security surveillance, computer vision, video broadcasting, and for recording social videos.
9. CAMERA PHONE
• A camera phone is a mobile phone which is able to capture still photographs (and usually video). Since
early in the 21st century the majority of mobile phones in use are camera phones.
• Most camera phones are simpler than separate digital cameras. Their usual fixed focus lenses and
smaller sensors limit their performance in poor lighting.
10. A W J O 0 C M O I C G N
X E S F S C R E E A I B
M B C R O E O P U M E R
U C M S N E Y X Y E B I
U A C N M P U T E R O I
P M A O U O I U T A A M
M C A M E R A P H O N E
S W C T U K E Y B O R D
11. A W J O 0 C M O I C G N
X E S F S C R E E A I B
M B C R O E O P U M E R
U C M S N E Y X Y E B I
U A C N M P U T E R O I
P M A O U O I U T A A M
M C A M E R A P H O N E
S W C T U K E Y B O R D
