Q1. Roles of sound card in modern computer and interfaces available for sound cards.
Sound cards it’s an internal card which is expandable and provides input and output audio
signals to and from computer through help of a computer. They help in editing videos, audios.
Entertainment and even projecting a video.
This are the roles that a sound card performs.
Sound card performs of an audio processor in the modern computer-signals comes into
the card and are interpreted as algorithms which are passed to the output of a computer as
a sonic signal after interpretation as waveforms.
Sound card also controls all the audio in the computer-it facilitates this function when
you want to record an audio using your computer. In case you are using a DVD audio
card helps in sending those signals. Even playing audio needs help of sound card because
of entertainment purposes.
Interface helps the user to communicate with the computer. Some of the interfaces in a
There is a component called the digital to analog which converts digital data to analog
Analog to digital converter which facilitates the recording from analog sound inputs.
Interface which connects the motherboard using peripheral component interconnect
(pci) meaning it connects hardware devices in a computer.
Another interface helps in facilitating headphones, microphones to allow playing and
recording of sound.
Q2. Describe a TV tuner card as an adopter card that allows a computer to receive and
display television signals.
TV tuner card helps signals from a television be received and interpreted by a computer. Some
TV tuner cards helps allows a computer to receive and display television signals by transmitting
an audio and video signals which are processed to produce a sound and pictures supposed to
display. Some of the set top boxes have digital TV services which sends their output using a
connector to TV receiver that don’t have the services.
Q3. Describe how LCD relies on a backlight which can either be a cold cathode fluorescent
lamp (CCFL) or the newer light emitting diode (LED) technology
Cold cathode it’s a cathode that is not electrically heated by a filament. If it emits more electrons
than supplied then it’s referred to as cold. A hot cathode is heated by electric current passed
through the filament.
Backlight it’s kind of illumination used in LCDs because LCD are unable to produce light by
themselves. For this reason they need special light source to produce images which can be seen.
Backlights are used illuminates the back.
Q4. Some motherboards require an extra power connector for PCI e devices. How man...