Page 64 - open office
P. 64
Liquid Crystal Display Monitors
The LCD monitor is the advanced form of CRT monitor. A cold
cathode ray and the uorescent panel are two major components of
the LCD. The cold cathode ray technology is used in LCD which
emits electrons and lights up the uorescent-coated monitor screen.
The process is known as backlighting. The second component is a
uorescent panel, which is made up of liquid crystal. iquid crystals
is current-sensitive and determines the number of electrons to pass
through the screen to make the shape and image of an object.
Light Emitting Diode Monitors
Light Emitting Diode (LED) is an improved version of the LCD
monitor and the manufacturers have tried to eliminate the
drawbacks of LCD monitors. Both the monitors are based on the
same display technology and provide better resolution. However,
the difference comes in backlighting as LCD monitors use Cold
Cathode Fluorescent Light and LED monitors are based on light
emitting diodes.
The backlighting impacts badly on the image and decreases its sharpness and brightness. WLED and RGB LED
are the two types of LED monitors, depending on the way the LED is placed in the panel.
Benefits of LED over CRT and LCD Monitors
LED monitors give a high-quality image with vibrant colors and viewing comfort. LCD monitors are unable
to display black and white images while LED monitors are capable of producing true black hues. It consumes
less electricity than CRT and CD monitors as a cold cathode uorescent lamp is embedded in the panel. The
absence of mercury makes it eco-friendly while zero percent ickering removes the chances of strain on the
eyes.
COMPONENTS OF CPU BOX
CPU box consists of various hardware components present inside it. The hardware in the CPU box are
Memory and Storage Devices, Main Circuit (Motherboard), Power Controller (SMPS), Processor, Ports,
Cards, etc.
Memory and Storage Devices
Memory, in the context of a computer system, refers to the location of storage of information. The CPU stores
the data in the memory/storage device that can be used or retrieved whenever required.
Memory receives instructions and data from the input devices and stores them till they are needed by other
parts of the computer. Once the instructions are executed, the results are transferred to a permanent location
which are then stored in a storage device.
Memory can be classified into two types:
Primary Memory Secondary Memory
64 Touchpad Information Technology-IX

