In computing, a keyboard is a typewriter-style device, which use
arrangement of buttons or keys, to act as mechanical levers or
electronic switches.We can use it when we chatting or doing
A webcam is a video camera that feeds its image in real time
to a computer or computer network.We can do a video
conference call using it.
Digitizing or digitization is the representation of
an object, image, sound, document or a signal (usually an analog
signal) by a discrete set of its points or samples. Strictly speaking,
digitizing means simply capturing an analog signal in digital form.
For a document the term means to trace the document image or
capture the "corners" where the lines end or change direction.
In computing, an image scanner—often abbreviated to
just scanner, although the term is ambiguous out of context
(barcode scanner, CAT scanner, etc.)—is a device that optically scans
images, printed text, handwriting, or an object, and converts it to
a digital image. Commonly used in offices are variations of the
desktop flatbed scanner where the document is placed on a glass
window for scanning.
In computing, a mouse is an input device that
detects two-dimensional motion relative to a surface.We
can use it to click a document ir a icon.
A monitor or a display is an electronic visual
display for computers. The monitor comprises the display
device, circuitry and an enclosure. The monitor will show us a
Computer speakers, or multimedia speakers,
are speakers external to a computer, that disable the lower
fidelity built-in speaker. We can hear sound of a music through
In computing, a printer is a peripheral which makes a
representation of an electronic document on physical media.
Individual printers are designed to support local and network
users at the same time.It uses to print documents and pictures.It
also take lesser time in just 30 seconds, it can print more 10
A projector or image projector is an optical device that projects
an image (or moving images) onto a surface, commonly
a projection screen.Most projectors create an image by shining a
light through a small transparent lens.It uses to see movies and
present a slide.Many lectures use this to present their viva
Headphones (or "head-phones" in the early days of telephony
and radio) are a pair of small loudspeakers that are designed
to be held in place close to a user's ears. We can hear sounds
Disk storage is a general category of storage mechanisms where
data are recorded by various electronic, magnetic, optical, or
mechanical changes to a surface layer of one or more
rotatingdisks.We can keep document or music inside is through
USB flash drives are often used for the same purposes for
which floppy disks or CDs were used for storage, back-up and
transfer of computer files.or store their files inside it.There are
many type of GB example 4GB,8GB,12GB,and16GB.the more the
GB,the ore storage we can store inside.
A memory card or flash card is an electronic flash
memory data storage device used for storing digital
information. They are commonly used in many electronic
devices, including digital cameras, mobile phones, laptop
computers, MP3 players and video game consoles. Most of
these can be diminutive, re-recordable, and can retain
data without power.
A floppy disk,is used to save some documents inside
it.normally,lectures or student will use it to save their
A hard disk drive (HDD)[note 2] is a data storage device used for
storing and retrieving digital information using rapidly rotating disks
(platters) coated with magnetic material. An HDD retains its
data even when powered off. Data is read in a random-
access manner, meaning individual blocks of data can be stored or
retrieved in any order rather than sequentially. An HDD consists of
one or more rigid ("hard") rapidly rotating disks (platters)
withmagnetic heads arranged on a moving actuator arm to read and
write data to the surfaces.