A PC contains Hardware as well as software to perform computing task. In absence of Hardware or software, computer system is a meaningless device. For better understanding about the hardware and software, a short description is given below-
Hardware:
The physical components of a computer, and the various accessory devices that can be added or removed, are termed hardware.
According to processing function hardware can be classified into 3 categories-
a. Input Unit
b. Processing Unit
c. Output Unit
According to physical groups, they are classified as:
a. System unit
b.
Peripherals
The System Unit
The system unit contains almost all the important components of a PC. Some common components of a system unit briefly described below:
Mother board / The System Board
The motherboard can compare with the nerves and blood vessels inside the human body, which connect all the vital organs. Instead of nerves and blood vessels, the motherboard uses tiny electrical paths to connect each component of the computer. The motherboard is what ties everything together inside the computer. Motherboard contains BIOS, the connecting slots (PCI, AGP, ISA, Memory, IDE Slots and Zip Socket for Processor etc.), Ports (USB, NIC, COM1, COM2, PS2 Mouse, PS2 Keyboard, AGP/VGA, and Printer etc.), Connectors (Power and IDE Hard Disk Drive, CDROM Drive and Floppy disk drive etc.), BUS and several Electronic components.
VGA / AGP
Generally, it sends the video signal from computer to the display device like monitor.
Sound Card
It converts digital audio signal into analog audio signal and vice-versa.
Network Adapter
It is responsible for communication between PCs through communication media. It some times refers to NIC (Network Interface Card).
Storage Medium:
The computer memory is not enough to store data and it is not possible to retrieve them after restarting the computer. Because the computer’s main memory is volatile. To use the data in future they must store in secondary storage like CDROM, Hard Disk, Flash memory / Pen drive and Floppy disk. The devices that control the read and write data in the above storage media is called drive. Hard disk drive is set inside the system unit. Pen drive is a portable electronic storage that uses flash memory. CD ROM Drive and Floppy disk drive is removable storage media.
BUS and Connectors
The data and control signal passes through the bus
from one device to another. Thus, all the components are connected with each
other by BUS.
Power Supply Unit
Without power supply computer does not work. Different components of the computer need different type of power supply. The common voltage levels are 12, 7, 5, 3.3 etc. Different devices have different types of connecting ports slots. The power supply unit provides all the connection solution.
Casing
It contains almost all the vital components of a computer like Motherboard, Hard disk drive, CD-ROM drive, Floppy disk drive (now it is it of market), memory card slot, power supply unit etc. The casing with all its contents is called System Unit.
Peripherals
The external parts of computer systems which are generally used for inputting and outputting information are referred to peripheral device. Some common types of peripherals are discussed below.
Monitor
It displays the activity of the computer. CRT Monitor is older version of display unit. Now a days LCD & LED Monitor is getting its popularity because it have no electromagnetic radiation that CRT Monitor has.
Keyboard and Mouse
These are input devices, send input information to the computer. An extra arrow like pointer indicates the presence of the mouse. Every computer must have at least a keyboard. Now a day wireless mouse and keyboard many user chosen who are fancy.
Printer
It is used to print text and still image on the paper.
Speaker, Microphone
These devices are used as audio output and input devices respectively.
[1] BIOS stands for Basic Input Output System. It is a program and stored in CMOS (complementary metal oxide semiconductor) chips. BIOS contains all the information of the components that are integrated with the motherboard the instruction to maintain a routine check for hardware (POST) and to initiate booting process.
I truly love your site.. Very nice colors & theme.
Did you make this website yourself? Please reply back as I’m wanting to create my very own blog and want to learn where you got this from or just what the theme is called.
Many thanks!
I have read so many articles or reviews regarding the
blogger lovers however this post is actually a fastidious
piece of writing, keep it up.
It’s actually a cool and helpful piece of info. I am happy that you just
shared this useful information with us.
Please keep us up to date like this. Thanks for sharing.
The very best man is usually the grooms most reliable and faithful
buddy or relative. The perfect man is often the grooms most reliable and
faithful pal or relative. The ushers could be the grooms
brothers, cousin, or greatest friends, or brothers and close relatives of
the bride. Responsibilities of the best Man Before the wedding, he –
pays for his personal attire, bought or rented.
May give the envelope to the officiant before the
ceremony. In the course of the ceremony, he – is just
not a part of the processional but enters with the groom, standing behind the groom and slightly
to the left. After the ceremony, he – immediately serves as one of many witnesses in signing the wedding license.
On the reception, he – does not stand in the receiving line until he can also be
the father of the groom. After the reception, he – promptly returns each his and the grooms rented formal
put on to the appropriate location.
I run a vape shop website directory https://vapetelligent.com aand ᴡe һave һad а posting fгom a vape shop іn the USA that likewіѕе offers
for sale CBD products. A Мonth lаter, PayPal has contacted use to claim tһat our account haѕ been limited аnd hɑve
аsked uѕ to get rid of PayPal as a payment solution frօm
our vape store directory. Ԝе dо not offer CBD items ѕuch as CBD
oil. Ԝe only provide web marketing services tο CBD companies.
I havе checked ⲟut Holland & Barrett– the UK’s Major Health ɑnd wellness Retailr and if you
takе a good look, үou ѡill ssee tһat thｅy offer а ratһeг wide-ranging series of CBD products, ρrimarily Buying CBD Products for Pets oil and thdy аlso һappen to accept PayPal as ɑ payment method.
It seems that PayPall is administering double sttandards tο many different companies.
Due to tthis constraint, I can no longer accept PayPal ᧐n my CBD-related internet site.
Thiѕ has limited my payment choices ɑnd currently, I am heavily reliant оn Cryptocurrency
payments аnd direct bank transfers. Ӏ haᴠe spoken witһ а lawyer from a Magic Circle laww firm іn The city ᧐f london aand tjey ѕaid tһat wnat PayPall іѕ
undertaking іѕ absolutely not legal and inequitable aѕ it sһould be applying an unform standard tⲟ all companies.
І аm yet tto check witһ one more lawyer frⲟm a UЅ law practice in Tһe city of london to
ѕee ᴡhat PayPal’s legal position іs in thｅ United States.
In the meantime, I woould Ьe highly appreciative iif аnyone here аt infohomebd.com coᥙld offer
me witһ different payment processors/merchants tһat ᴡork with CBD companies.
Hi there Dear, are you truly visiting this web site daily, if so then you will without doubt take
fastidious know-how.
This paragraph is genuinely a good one it helps new internet
people, who are wishing for blogging.
Feel free to visit my homepage :: strenthen immunity
Heya are using WordPress for your site platform?
I’m new to the blog world but I’m trying to get started and set up my own. Do
you need any coding expertise to make your own blog? Any help would be really appreciated!
A favored have to win by a number higher than the point spread to cover the
spread.
Do you have a spam problem on this blog; I also am a blogger, and I was wanting to know your situation; many of us have developed some nice practices and we are looking to trade strategies with
other folks, please shoot me an e-mail if interested.
Here is my blog anti aging skin care tips for men