This document discusses the key components of a computer system divided into groups. It provides details on the processor, RAM, hard drives, cache memory, graphics cards, keyboards, mice, scanners, monitors, printers, input/output ports, CD/DVD drives, and emphasizes choosing components with sufficient processing power, memory, storage, and ports based on one's needs. It concludes with recommending having a checklist of these parts when purchasing a computer.

2. The information about computer parts mentioned in this article can be divided into a few
groups. The groups mentioned out here may not be the standard way, how the various
computer manufacturers divide their components list into. But, this grouping methodology
will help you in classifying, the most indispensable components, for which you cannot
settle down at a low value. This will make the computer parts information in this article a
bit more clearer to understand. The groups are as follows:
 Output Parts: This is no doubt a standard way of defining the output devices of a
computer. Monitor, printer and scanner are the most common output devices.
 Input Parts: The components like computer keyboard, computer mouse, etc. which are
used for feeding in data and instructions to the computer are called the input devices for
a computer.
 Processing Parts: The computer processor is the only processing component of your
computer.
 Input Output Connectivity Parts: The computer I/O parts and USB ports are the ways or
means through which a computer can connect to other computer peripherals.
 Memory Devices: The memory devices consist of the RAM and the secondary storage
devices. Another memory called the cache memory is also included in the memory
devices.

3.  This component deserves to be explained first of all. Because this
is what makes a computer what it is. All the processing of
information takes place in the computer processor. When you
are working on your computer parts checklist before you go for
purchasing your computer, take into consideration, that you
choose a computer processor with a high frequency. A
frequency of 2.2 GHz means that the computer takes 1/(2.2 X
109) seconds to process one instruction. So, a higher frequency
for your computer processor will mean that your computer
processing time will decrease, hence increasing the speed of
your computer. There are various types of processors available in
the market. A 64 bit processor has a frequency, twice the
frequency mentioned in your processor speed. For a 32 bit
processor a computer frequency of 2.2 GHz will mean exactly 2.2
GHz, but for the same frequency, a 64 bit processor will have a
frequency above 4 GHz.

4.  The Random Access Memory of computer is
the primary memory of your computer. This is
often also referred to as the main memory of
your computer. In fact, when the term
computer memory is used, it does not mean
the computer hard drive, but the RAM of your
computer. Any information that you want to
access from the secondary storage devices,
first needs to be loaded into the RAM before
being accessed by the computer processor.
Thus, it can be easily understood that a good
amount of computer RAM will definitely
enhance the performance of your computer.

5.  All the information that you want to store in
your computer is stored in the hard drives.
The computer hard disks can be broadly
classified into two types, SATA hard disks
and PATA hard disks. The SATA hard disk is a
serial device, while a PATA hard disk is a
parallel device. SATA hard disks are faster
than PATA. The information can be stored
and accessed from the computer at a very
high speed. Owing to the age of
digitalization, it is important that you see to
it that your hard disks have good amount of
memory capacity.

6.  This is the memory that comes in between
the RAM and the computer processor. The
size of the memory is not very large. It is
usually in single digit MB. Certain logics are
used to enter the most used information to
the cache. The computer processor can
access the cache memory, even before
accessing the RAM. Hence, see to it that
the computer you are willing to purchase
has a sufficient amount of cache too.

7.  If you are into gaming then, a graphics
card is something that will help you a lot.
It takes off a whole lot of pressure from
the computer RAM. It makes the
processing speed faster and can handle
graphics. The size of the graphics card
comes in MB. There are in fact some
games which won't run in your
computer, without a graphics card.

8.  This is among the input devices of a
computer. The computer keyboard is used
for entering data into the computer.
Obviously, nobody needs an explanation as
to what a computer keyboard is. The
question is what to look for in a computer
keyboard. Computer keyboards nowadays,
provide a wide array of other functional
keys, besides the normal keyboard keys.
There are keys to handle multimedia
applications as well as gaming applications
too. Purchase a computer keyboard that
has all these functionalities included in it.

9.  The pointing device of your computer,
the mouse is the reason why most of us
have forgot almost all the keyboard
shortcuts. The application of a mouse
mainly relies on the graphical user
interface. The light detection computer
mouse is something that anyone buying
a computer is interested in. In fact, the
roll wheel mouse is almost out of use.

10.  What if you want to feed in information into
the computer through some pages.
Suppose you want a photograph to be
uploaded in your profile on the social
networking sites. What would you do? The
answer is a scanner. A computer scanner
allows you to scan hard copy of documents
and feed them into your computer. Browse
over the Internet to find out which are the
best scanners available in the market.

11.  A computer monitor is an output device. Definitely
this is another device that does not need an
explanation as to what it exactly is. Now, the
question is, what are the features that you need in a
computer monitor. There are basically two types of
computer monitors, LCD monitors and CRT monitors. If
you are a gaming enthusiast and give a lot of
importance to graphics and look and feel, then
probably an LCD monitor is what you would want.
LCD monitors may be a bit costlier than the CRT
monitors, but the cost is worth it. As far as CRT
monitors are concerned, if you are a bit tight on
budget, you can settle down for a flat screen CRT
monitor, which will of course cost far lesser than an
LCD monitor.

12.  This is a printing device through which you
can print out hard copies of documents.
Though not extremely necessary that you
should get so, but it is always preferable to
get a printer for your computer, if you are
into desktop publication. Besides, computer
printers do not cost much nowadays. A
laser printer gives you high performance as
well as good quality hard copies of your
documents at a very fast speed. So, if you
are going to purchase a printer for your
computer, try to get a laser printer.

13.  Input output ports are required by the
computer for connecting to the external
peripherals. A good number of input/output
ports is very much important. Now, it is the
age of USB devices. See that you have
sufficient number of USB ports to your
computer. After all, you may need to
attach an external USB mouse, your USB
flash drive and your mobile phone at the
same time to the computer. Hence, it is
important that you have sufficient number
of USB ports.

14.  This can be considered as an input as well as, an
output device. You can get information through the
CD or DVDs into your computer, or you can also write
information into the same. It is very important that
you have it in your computer. Take into
consideration, that you take a CD/DVD ROM which
can read as well as write DVDs.
 This is basically the pc parts checklist, that you need
with you when you go for purchasing a computer. If
you are going for a desktop computer, you can in
fact ask for assembling the individual components.
But if you are going for a laptop computer, you will
have to check a lot more configurations and find out
the best laptop deals

15. Pepared By:
Gaurab Bhandari
Class : Six ‘B’
Roll No : Thirteen
Sumbited To:
Shiva Ram Shigdel
Computer Teacher
Class : Six ‘B’