2. What is computer system?
• A computer system is one that is able to take a
set of inputs, process them and create a set of
outputs.
• The amazing word computer opens up a magical
world for us:
• A world solutions of,
• Speed control,
• Information, and
• Communication.
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3. What are the parts of computer system?
• There are four main parts of computer system.
• Monitor
• CPU(Central Processing Unit)
• Keyboard
• Mouse
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4. Monitor:-
• Definition Of Monitor.
• The monitor is the piece of
Computer Hardware that displays the video and graphics
information generated by the computer through the
video card.
• Monitors are very similar to
televisions but usually display information at a much
higher resolution.
• The Monitor is also known as
Screen, Display, Video display, Video screen.
•
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5. Types Of Monitor:-
• There are some types of monitors.
• CRT(Cathode Rays Tube)
• MONO CHROME
• Support only text
• No color support
• HGA(Hercules Graphics Adapter)
• No color support
• Support Graphics
• CGA(Color Graphics Adapter)
• 16 color support in text mode
• 04 color support in graphic mode
• VGA/SVGA/PGA
• Video Graphics Array
• Supper Video Graphics Adapter
• Professional Graphics Adapter
• Support Graphics & Text with 256 color
•
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6. CUP(Central Processing Unit)
• CPU (pronounced as separate letters) is
the abbreviation for the central
processing units sometimes refered to
simple as the central processor but
more commonly called processor. The
CPU is the brain of the computer where
most calculation take place. In terms
computer power the CPU is the most
important element of computer system.
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7. Parts of CPU
• There are three main parts of CPU
• ALU (arithmetic matic logic unit)
• It performs all the arithmetic and logical
operations.
• CU (controlling unit).
• Control unit is responsible for all the functions
those are being processed.
• MU (memory unit).
• Memory unit is the area where all the data is
stored.
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8. MOUSE:-
• A Mouse is a small device that a computer
user pushes across a desk surface in order to
point a place on a display screen and to
select one or more actions to take from that
position. The mouse is an integral part of the
graphical user interface (GUI) of any
personal computer. The mouse apparently
got its name by being about the same size
and color as a toy mouse.
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9. Types of mouse
• According to working mechanism a mouse can be three
types:
• Mechanical.
• Optomehanical.
• Optical.
• A mouse can be three types according to how a
computer mouse hooks up or connects to
the computer:
• Serial mouse.
• PS/2 mouse.
• Cordless mouse.
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11. KEYBOARD:-
• External input device used to type data into some
sort of computer system whether it be a mobile
device, a personal computer, or another
electronic machine . A keyboard usually includes
alphabetic ,numerical, and common symbols
used in everyday transcription .
• Keyboard for personal computers are connected
to the machine through serial or USB plugs..!
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12. Types of keyboard
• Although on the basis of key arrangements
there are four major keyboard layouts being
used
worldwide, QWERTY, AZERTY,QWERTZ and
HCESAR, but they can be classified in many
more different categories depending on types
of computer connector, size, number of keys
etc.
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