A computer is an electronic device that processes data through a series of commands into information and storage. It can perform mathematical and logical operations and process large volumes of data at high speed. A computer system includes the computer hardware, software, and peripheral devices. System software includes the operating system, which conducts communication between hardware components, and utility programs, which perform maintenance tasks. Computer components include internal parts like the microprocessor and motherboard, as well as external parts like the monitor, keyboard, and disk drive. Input devices like keyboards and mice allow data to enter the computer, while output devices like monitors and printers allow data to leave the computer.

1. Presenter:
Mr. Reynaldo M. Anario Jr.
ICT Teacher

2. What is COMPUTER?
is a digital electronic device that
processes data through a series of
commands into information and
storage. It can perform
mathematical and logical
operations, and process large
volumes of data at high speed.

3. A Computer has four basic functions:
Accept data
Processes data
Produce output
Stores data

4. Computer System
 refers to a complete working computer. It includes not
only the computer but also any software and
peripheral devices that are necessary to make the
computer function.
System Software
 is a catch-all term for the programs that handle the
running of a computer’s hardware.
 Operating System Utilities

5. Operating system
 a program that conducts the communication between
the various pieces of hardware like the video card,
printer, the mother board, sound card, and the
applications.
Utility program
 Perform tasks related to the maintaining of a
computer’s health-hardware or data.

6. Computer Components
System Base Unit/System Unit
 External Parts  Internal Parts
 Monitor  Microprocessor
 Power switch  Cards
 Disk Drive  Motherboard
 Reset Switch  Hard Disk
 Casing  Power Supply
 LED (light emitting diode)  Fan
 P0rts  Speaker
 RAM (Random Access Memory)
 ROM (Read Only Memory)

7. Computer Components
Connectors
 Male – with one or more exposed pins
 Female – with holes in which the male connector can
be inserted

8. Computer Components
I/O Devices and Ports
 Input/Output (I/O) – refers to the communication
between an information processing system (such as
computer and the outside world – a human or another
information processing system.
 Port – serves as an interface between the computer
and other computers or peripheral devices. It is a
specialized outlet on a piece of equipment to which a
plug or cables connect.

9. Input and output Devices
Input Devices
 Keyboard
 Mouse
 Trackball
 Touchpad and Touch Screen
 Keyboard
 Light Pen
 Scanner

10. Input and output Devices
Output Devices
 Monitor
 Printer
 Plotters
 Facsimile (Fax)
 LCD Projection Panels
 Audio Card
 Computer Output Microfilm

11. Thoughts to ponder
 Excellence is the spirit of compulsion
of competence in whatever job a
person is working. It is a safeguard
against on the job mediocrity. It
results in the worker’s having initiative
and strong personal drive to improve
his skills and levels of competence.
Development Bank of the Philippines

12. Thank You Students!!!