Computer hardware is the collection of physical elements that constitutes a computer system. Computer hardware refers to the physical parts or components of a computer such as the monitor, mouse, keyboard, computer data storage, hard drive disk (HDD), system unit (graphic cards, sound cards, memory, motherboard and chips), etc. all of which are physical objects that can be touched.
Input Devices
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 form that humans understand to one that the computer
can work with. Most common are keyboard and mouse.
Mouse
A computer would be useless if you had no way to communicate with it. That’s why you
need an input device. Essentially, an input device lets you talk to your computer. Two
examples of input devices are the keyboard and the mouse. We’ll discuss keyboards later;
for now let’s concentrate on the mouse.
The mouse acts as a handheld pointing device that allows you to control the actions of
that blinking item on your screen known as a cursor. Depending on the software you are
using and the task you are doing, the cursor may resemble such symbols as a slanted.
Keyboard
Keyboard
Like the mouse, the keyboard is an input device that allows you to talk to the computer. The keyboard is easily recognizable because it resembles a typewriter keypad. If the typewriter predates you, then look for the component that’s covered with buttons that have letters, numbers, and symbols on them.
Monitor
A computer’s monitor looks and works a lot like a TV screen. The monitor is really only
half of what makes text and images appear on the screen. The other half is the graphic
card, or video/display adapter. The monitor plugs into the graphics card in the back of the
computer.
The size of a monitor is measured diagonally across the screen, just like TVs.
Common monitor sizes are 15, 17, 19, and 21 inches. The most popular monitor size
is currently 17 inches.
Graphics Card
The second part of a computer’s video system is the graphic card or video adapter. A
graphics card is an expansion card that plugs into a computer’s motherboard and is
responsible for all the text and pretty images that appear on your computer’s monitor.
Many computers don’t have a graphics card at all—all the video capabilities are instead
built into the computer’s motherboard.
Central Processing Unit (CPU)
Primary Memory
Secondary Memory
Output devices
An output device is any piece of computer hardware equipment used to communicate
the results of data processing carried out by an information processing system (such
as a computer) which converts the electronically generated information into human readable form.
Hardware or Software?, an interactive worksheet by sandie001
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Hardware, an interactive worksheet by maejhea
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