Welcome into the third lecture in this series
of logic design. here, I want to speak about Computer hardware
part 4. In this part I will speak about input and
output. Input device is any peripheral – piece of
computer hardware equipment to provide data and control signals to an information processing
system such as a computer or other information appliance. Input device translate data from
a form that humans understand to one that the computer can deal with.
Input devices include scanner, keyboard, mouse, camera and more.
On the other hand, an output device is any piece of computer hardware equipment used
to deliver the results of data processing carried out by an information processing system
(results from CPU) which converts the electronically generated information into human readable
form. Output devices include monitor, printer, speakers
and more. Also in this lecture I will speak about interfaces
such as sound card (also known as an audio card)
is an internal expansion card that provides input and output of audio signals to and
from a computer under control of computer programs. The term sound card is also applied
to external audio interfaces used for professional audio applications.
Another interface is Network Interface Card: Network card is an electronic device that
connects a computer to a computer network, usually a LAN. It changes from Ethernet (wired
network) to Wi-Fi. Next is Graphical Interfaces: It’s almost
certain that the connection between your monitor and your PC is one of three types of cables:
VGA, HDMI and DVI. Note that VGA or Video graphics array and DVI or digital visual interface
don’t support audio however, HDMI or High-Definition Multimedia Interface support audio and better
resolution. Finally, USB, short for Universal Serial Bus,
is an industry standard that was developed to define cables, connectors and protocols
for connection, communication, and power supply between personal computers and their peripheral
devices This is the end of this video. I hope that
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