This is a short presentation about the basic of computer so that students will understand the hardware and software and how computer is used in our daily life.

2. INPUT DATA PROCESS DATA STORES DATA AND
NFORMATION
OUTPUTS INFORMATIO
John Smith
2358 Smithville
Road
*Movie 1
*Movie 2
John Smith
2358 Smithville
Road
*Movie 1
*Movie 2

3.  HARDWARE: Parts of the computer that you can see and touch
For example: CPU, monitor, keyboard, mouse, printer, and other items
called hardware devices
 SOFTWARE : Instructions or programs that control the computer and tell the
hardware what to do.
For example: Operating System, Application Software, etc.

4.  SUPERCOMPUTER - a large very fast mainframe used especially for scientific
computations.

5.  MAINFRAME COMPUTER - A mainframe (also known as 'big iron') is a high-
performance computer used for large-scale computing purposes that require
greater availability and security. Sometimes called centralized systems.

6.  MINICOMPUTERS - a computer of medium power, more than a microcomputer
but less than a mainframe.

7.  MICROCOMPUTERS – a compact computer, with less capacity and capability
than a minicomputer, consisting of a microprocessor and other components.
 PERSONAL COMPUTER OR PC (DESKTOP) - a compact computer that uses a
microprocessor and is designed for individual use, as by a person in an office or at
home or school

8.  LAPTOP - a notebook is a portable personal computer with a clamshell form
factor, suitable for mobile use

9.  PERSONAL DIGITAL ASSISTANTS (PDA) - also known as a palmtop computer,
or personal data assistant, is a mobile device that functions as a personal
information manager.

10.  TABLETS PCs - A tablet is a wireless, portable personal computer with a touch
screeninterface. The tablet form factor is typically smaller than a notebook
computer but larger than a smartphone.

11.  4 elements that make up the personal computer system
USER SOFTWARE HARDWARE ELECTRICITY

12.  FOUR MAJOR HARDWARE COMPONENT PARTS:
- Central Processing Unit (CPU)
- Random Access Memory (RAM) /
- Input / Output(I/O) Devices
- Storage Devices
 INTERNAL / EXTERNAL COMPONENTS:
- Internal Device can be installed inside the system unit.
- External Device can be plugged into a connection on the computer.

13.  A system unit is the core of a computer
system
 A box that has electronic components to
process information
 CPU or microprocessor which act as a
“brain” of the computer.
 Random Access Memory (RAM) that
temporarily stores info that the CPU uses
while the computer is on. The information
stored in RAM is erased when the computer
is turned off.

14.  A motherboard is a
printed circuit board
containing the
principal components of
a computer or other
device, with connectors
into which other circuit
boards can be slotted.

15.  Expansion Slot – graphics card, memory
 PCI Slot – modem, sound card
 AGP – for 3D graphics
 CPU Slot – microprocessor chip
 RAM Slot – for additional memory

16.  Openings at the back of a system unit
 Allows you to expand component within the system box
Modem Card
Video Card

17.  CPU or Central Processing Unit
 Receives and executes instructions form
software activated by user.
 Process information and instruction at
different speeds measured in Megahertz
(Mhz) or Gigahertz (Ghz)

18.  Computer needs memory chips to store information
 Measured in bytes which 1 byte = 1 character
 Computers developed using a numbering system of 1s and 0s.
 These two digits make a bit and eight bits make 1 byte
1 kilobyte = 1,024 bytes or 1 thousand bytes
1 megabyte = 1,000,000,000 bytes or 1 million bytes
1 Gigabyte = 1,000,000,000,000 bytes or 1 Billion bytes
1 Terabyte = 1,000,000,000,000,000 bytes or 1 Trillion bytes
 Every file used in a software program by the computer has a specific file size.

19.  Group of integrated circuit responsible for:
- Starting a computer
- Checking the RAM
- Loading the OS
 Function only when the computer first turned
on or each time you restart (reboot) the
computer.
 Reads information entered and process during
the time it resides in the memory

20.  A random-access memory device
allows data items to be read and
written in roughly the same amount
of time regardless of the order in
which data items are accessed.

21.  Allow communication between the user and computer
 In simple terms, anything you used to enter information into a computer
considered input device, and anything used to display information in a computer
considered output device.
 Input / Output Device can be used to:
- send information to the computer.
- display / transmit info from the computer
- communicate between computers

22. MOUSE
MICROPHONE
SCANNERS
KEYBOARD
CD ROM / DVD DRIVE

23. PRINTER FLAT PANEL
MONITOR
SPEAKERS
CRT MONITOR
PLOTTERS
HEADSET

24. MODEM
GRAPHICS TABLET
JOYSTICK
DIGITAL CAMERA

25.  Store software programs and permanent record of work
FLOPPY DISK HARD DISK DRIVE CD DRIVE / WRITER DVD DRIVE

26. SUPERDISK
TAPE DRIVES
FLASH DISK
FLASH / MEMORY
CARDS

27.  Computers generally have one floppy disk drive, at least one hard disk drive, and
one CD drive.
 Each disk drive is assigned with letter and referred to as Drive [D]: or [D]
 Drives:
- Floppy Drives A or B
- Hard Drives C or higher for each hard drive installed
- CD/DVD Drives D or higher for each drive installed
- Network Drives F or higher for each network drive
 Can add or remove drives as required

28.  A printer transfers data from a computer onto paper.
 Different types of printers
DOT MATRIX INK JET PRINTER BUBBLE JET
PRINTER
LASER PRINTER