A computer consists of a central processing unit (CPU) that carries out program instructions by performing basic operations. A monitor displays the visual output and uses either liquid crystal display (LCD) or cathode ray tube (CRT) technologies. The CPU, along with input devices like a keyboard and mouse, and output devices like printers and speakers, allow a computer to interact with users.

1. PARTS OF COMPUTER
A computer is a general purpose device
that can be programmed to carry out a set
of arithmetic or logical operations. Since a
sequence of operations can be readily
changed, the computer can solve more than
one kind of problem.

2. MONITOR
A monitor or a display is an electronic visual
display for computers. The monitor comprises the display
device, circuitry and an enclosure. The display device in
modern monitors is typically a thin film transistor liquid
crystal display (TFT-LCD) thin panel, while older monitors
use a cathode ray tube (CRT) about as deep as the screen
size.

3. CPU
A central processing unit (CPU), also referred to as a central
processor unit,[1] is the hardware within a computer that carries out
the instructions of a computer program by performing the basic
arithmetical, logical, and input/output operations of the system. The
term has been in use in the computer industry at least since the early
1960s.[2] The form, design, and implementation of CPUs have changed
over the course of their history, but their fundamental operation
remains much the same.

4. AVR
The AVR is a modified Harvard architecture 8-
bit RISC single chip microcontroller which was developed
by Atmel in 1996. The AVR was one of the first
microcontroller families to use on-chip flash memory for
program storage, as opposed to one-time programmable
ROM,EPROM, or EEPROM used by other microcontrollers
at the time.

5. KEYBOARD
In computing, a keyboard is a typewriter-style device,
which uses an arrangement of buttons or keys, to act as
mechanical levers or electronic switches. Following the
decline of punch cards and paper tape, interaction
via teleprinter-style keyboards became the main input
device for computers.

6. MOUSE
In computing, a mouse is a pointing device that
functions by detecting two-dimensional motion
relative to its supporting surface. Physically, a mouse
consists of an object held under one of the user's
hands, with one or more buttons.

7. PRINTER
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. Some printers can print documents
stored on memory cards or from digital cameras and scanners.

8. SPEAKER
Computer speakers, or multimedia speakers, are speakers external to a computer, that
disable the lower fidelity built-in speaker. They often have a low-power internal amplifier.
The standard audio connection is a 3.5 mm (approximately 1/8 inch) stereo phone
connector often color -coded lime green (following the PC 99 standard) for computer sound
cards. A few use an RCA connector for input. There are also USB speakers which are
powered from the 5 volts at 500 milliamps provided by the USB port, allowing about 2.5 watts
of output power. Computer speakers were introduced by Altec Lansing in 1990.[1]

9. WI-FI
Wi-Fi, also spelled Wi-Fi or Wi-Fi, is a popular technology that allows an electronic
device to exchange data or connect to the internet wirelessly using radio waves.
The Wi-Fi Alliance defines Wi-Fi as any "wireless local area network (WLAN)
products that are based on the Institute of Electrical and Electronics Engineers'
(IEEE) 802.11 standards".[1] However, since most modern WLANs are based on these
standards, the term "Wi-Fi" is used in general English as a synonym for "WLAN". Only
Wi-Fi products that complete Wi-Fi Alliance interoperability certification testing
successfully may use the "Wi-Fi CERTIFIED" trademark.