There is a personal computer in
almost every home and office and yet there are still people confused about
computer hardware. You can define a personal computer as a system that was
built for one person to use but there come in a variety of shapes and sizes.
The tower size was the most common when they first became popular, but today
people are more prone to purchase a midi or mini tower to save on space. The
difference in size mainly dictates the amount of bays that are available for
drives and the type of motherboard that will fit into the case.
The computer contains multiple
components that are placed inside to create the unit. You can have all the
hardware in place, all in working order but without software, mainly an operating
system you are left with a dumb computer. The operating system will manage the
hardware inside the computer and determine how it is utilized and also allows
the user to control the way the system operates. You may have heard the term
firmware and it has been associated with computer hardware, it is not
considered hardware, just a program that is embedded into the hardware itself.
The firmware in the hardware can be updated to help your hardware work properly
with different operating systems and other software on your computer.
The hardware is considered all
parts that are inside or connected to the outside of the computer. The computer
case, mouse, keyboard, monitor and speakers are considered hardware. Inside the
computer you have parts such as the motherboard, CPU, memory, hard drive, ROM
drives, video card, sound card, Ethernet card and power supply. The computer
hardware in each system may vary by type, brand or even size but the main
components are always the same in order for the system to work. If you go to
purchase a bare bone system it will come complete with case, power supply,
mother board and CPU, memory, video, sound and sometimes hard drive. This is
the basic components to get the tower to operate; you can then add ROM drives,
speakers, keyboard, and mouse and monitor to have a working dumb computer. In
order to have a computer that is completely operational you have to install an
operating system and the necessary drivers for the hardware to work.
Each piece of hardware in your
computer is different; some will require drivers while others will not. The
memory for instance requires no drivers and is simply plug_and_play and most
ROM drives and hard drives act the same way. But, other hardware inside your
system such as your Ethernet card, video card or sound card will require
drivers to be loaded once the operating system is installed to operate
correctly. Many times the operating system you use will pick up the computer
hardware drivers without having you install them manually. Once you boot your
system up for the first time your operating system will detect the new
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