Page 582 - Ultimate Visual Dictionary (DK)

THE MODERN WORLD
Digital camera 2½in (6.8cm) liquid

crystal display
FOR MORE THAN 200 YEARS, CAMERAS recorded Flexible
pictures as chemical changes in silver-containing ribbon cable
substances, on a strip of flexible, celluloid film.
The digital camera records pictures in electronic
form. At its heart is a specialized integrated
circuit known as a charge-coupled device (CCD).
This has millions of microunits known as pixels.
It works in the opposite way from a miniature
computer or TV screen. Instead of electric signals MONITOR
making pixels shine, when light hits a pixel it
generates a tiny electrical signal, according to Protective
steel panel
the light’s color and brightness. The signals
from the CCD’s millions of pixels are analogue:
they vary continuously in a wavelike fashion.
They are converted by a microchip to digital
codes of numbers, represented as on-off electronic
pulses. The digital signals are processed and fed
to the camera’s internal memory or a removable
memory device such as a data card or memory
stick. Photographs can be downloaded from a
digital camera to a computer via a cable or in
some cases a wireless link. Some digital cameras
automatically reduce blurring caused by camera
shake or fast movement, some can record video
clips as well as still pictures.
CHASSIS Keypad
Infrared
Connector Eyelet for
cover camera strap receiver
HOW A DIGITAL CAMERA WORKS Flash lamp (rear)

Lens focuses Light Speaker
CCD light from
turns scene
light into Shooting
electronic Analogue mode
signals
signals button
Analogue to
digital converter Playback
microchip button
Microprocessor
Delete
CHROMED PLASTIC button
REAR CASE
SIDE COVER
Digital Menu OK (Select)
signals button button

Speaker
LCD Memory In-camera Speaker mounting
screen stick memory chip bracket
SPEAKER ASSEMBLY
580