2. DEFINITON
AN ELECTRONIC DEVICE FOR STORING AND PROCESSING
DATA, TYPICALLY IN BINARY FORM, ACCORDING TO
INSTRUCTIONS GIVEN TO IT IN A VARIABLE PROGRAM.
3. FOUR FUNCTION OF A COMPUTER
INPUT –the procedure of feeding data into a computer.
PROCESS ING – refers to the operation of manipulating
and transforming data into something useful.
OUTPUT – the result of the processing function.
STORAGE – computers can save data so that it can be used
at another time.
4. INPUT DEVICES
An input device is any hardware device that sends data
to a computer, allowing you to interact with and control the
computer. The picture shows a Logitech trackball mouse,
an example of an input device. The most commonly used
or primary input devices on a computer are the keyboard
and mouse.
5. PROCESSING
A processing device is any device in a computer
that handles this intermediate stage. For example,
in the diagram below, the CPU is the processing
device. Some of the most common processing
devices in a computer include the following:
central processing unit (CPU)
graphics processing unit
6. OUTPUT DEVICES
An output device is any peripheral that receives
data from a computer, usually for display, projection,
or physical reproduction. ... Monitors and printers are
two of the most common output devices used with a
computer.
7. STORAGE
A computer storage device is any type of
hardware that stores data. The most common
type of storage device, which nearly all
computers have, is a hard drive. The
computer's primary hard drive stores the
operating system, applications, and files and
folders for users of the computer.
8. TYPES OF A
COMPUTER
SUPERCOMPUTER – SUPERCOMPUTER IS A COMPUTER
WITH A HIGH LEVEL OF COMPUTING PERFORMANCES
TOWER – A COMPUTER CASE ALSO KNOWN AS A COMPUTER
CHASSIS, TOWER, SYSTEM UNIT , CABINET , BASE UNIT , OR SIMPLY
CASE , IS THE ENCLOSURE THAT CONTAINS MOST OF THE
COMPONENTS OF A COMPUTER (USUALLY EXCLUDING THE
KEYBOARD AND MOUSE).
DESKTOP- A COMPUTER SUITABLE FOR USE AT AN ORDINARY
9. MINI TOWER – A SMALL VERTICAL CASE FOR A
COMPUTER, OR A COMPUTER MOUNTED IN SUCH A CASE
MINI COMPUTER – A COMPUTER OF MEDIUM
POWER, MORE THAN A MICROCOMPUTER BUT LESS
THAN A MAINFRAME
MAINFRAME – A MAINFRAME IS AN ULTRA HIGH-
PERFORMANCE COMPUTER MADE FOR HIGH-VOLUME,
PROCESSOR-INTENSIVE COMPUTING.
10. LAPTOP – LAPTOP COMPUTERS, ALSO KNOWN AS NOTEBOOKS,
ARE PORTABLE COMPUTERS THAT YOU CAN TAKE WITH YOU AND
USE IN DIFFERENT ENVIRONMENTS. THEY INCLUDE A SCREEN,
KEYBOARD, AND A TRACKPAD OR TRACKBALL, WHICH SERVES AS
THE MOUSE.
MICROCOMPUTER - A MICROCOMPUTER IS
A COMPUTER DESIGNED FOR INDIVIDUAL USE. THE TERM WAS
INTRODUCED IN THE 1970S TO DIFFERENTIATE DESKTOP
COMPUTER SYSTEMS FROM LARGER MINICOMPUTERS. IT IS
OFTEN USED SYNONYMOUSLY WITH THE TERM "DESKTOP
COMPUTER," BUT IT MAY REFER TO A SERVER OR LAPTOPAS
WELL.
11. MAJOR COMPONENTS OF
COMPUTER
Information is funny stuff. The information or the web page you are looking at is recorded
on
Hard disk inside a computer located in New Britain, Connecticut. The Information was
Copied from that physical device to other physical devices perhaps hundreds of times
before it got to your computer where your web browser is using it to display these words
on your monitor.
Clearly information is something different from the devices used to store and transmit it.
A. Computer system consist of both hardware and information stored on hardware.
Information stored on computer hardware is often called software
The Hardware components of a computer system are electronic and mechanical parts.
The Software components of a computer system are the data and the computer
programs.
12. P.C BACK PANEL LABELED
POWER SUPPLY
PS/2 MOUSE
CONNECTORPS/2 KEYBOARD
CONNECTOR
SERIAL
COMMUNICATION
PORT
PARALLEL PORT
VGA
PORT
GIGABIT RJ-45
ETHERNET
LAN PORTMICROPHONE
JACK
AUDIO OUT JACK
LINE IN JACK
56K MODEM
USB
PORTS
13. MOTHER BOARD LABELED
PCI SLOT (x5)
SOUTH
BRIDGE
AGP SLOT
CMOS BACK UP
BATTERY
NORTH
BRIDGE
(with heatsink)
IDE CONNECTOR (x2)
DRAM MEMORY
SLOT (x2)
20-pin ATX Power
Connector
CPU FAN &
HEATSINK
MOUNTING POINTS CONNECTOR FOR
INTEGRATED
PERIPHERALS
Hard drive slots
ROM
CPU Socket
