ITC #1: What is Computer?
health risks
long and improper use of the computer can lead to injuries and hazards to the user. the pain or injury may affect the eyes, hands, wrists, necks and back. some injuries may require surgery and some may become permanent
-basic application software -specialized application software
2 kinds of application software
-system software -application software
2 kinds of software
-Data -Connectivity -People -Procedure -Software -Hardware
6 Important Elements of a Computer System
-privacy violation -use of power -safety and security -health risk -environment
Disadvantage of using computer
-device driver -utility software -operating software
ex of system software
operating system
is a program that is basically responsible for the coordination, management and sharing of hardware resources and tasks in the computer.
connectivity
means that a computer must be connected through the internet.
safety and security
people have to be careful in sharing photos and personal information on the computer and internet. there are people with evil intent and have caused harm to a lot of people using information taken from the internet, exs are stolen and fraudulent credit cards
privacy violation
personal information when stored in a computer can be viewed and stolen. this could lead to people using other people's information to take advantage in many situations
people
they run and operate the computer, build and improve computers and also write the programs and design desired output from a set of input data.
device driver
a program that allows a particular hardware device to work and communicate with the computer system.
-consistent -communicate -reliable -speed -storage
advantages of using the computer
Software
are programs of instructions that a computer must follow to do its task. the purpose of software is to process data into useful information for people
Application
are programs that people use for their day to day tasks on the computer
procedure
are step by step instructions to follow when using hardware, software and data
Hardware
are the physical components that you can actually touch.
speed
computer operates on data and commands at incredibly fast speed
storage
computers can store enormous amount of data and information in their memory
use of power
computers only need a small amount of electric power but with many computers around, this result to high total electricity requirement. power is an expense also a contributor to environmental damage
-windows xp -linux -mac os
ex of operating system
CPU Mouse Keyboard printer speaker monitor
examples of hardware
consistent
if you input the same data into the computer using the same program, it will give you the same result all the time
specialized application software
includes software for graphics, multimedia, audio, video, web designing and many other applications that focus on a certain discipline
data
includes texts and numbers, sounds, images and video that we input into computer for processing
basic application software
includes word processor, spreadsheet, and database and presentation software
system software
is a collection of programs which includes the operating system, utilities and drivers
utility software
is a program that performs maintenance tasks for the computer resources, such as clean up and organizing files and programs so they would load and work faster. some operating systems have utility additional utilities can be installed from other software vendors
Computer
is an electronic hardware device. -it works like a human brain that stores information from our senses and then uses these to guide human actions.
reliable
modern computers rarely breakdown and when they do, they are easily repaired
environment
old computers must be disposed off properly. computer parts could release toxic or dangerous materials into the environment
programs
operates and functions under the control of instructions
communicate
people can correct with others by the use of computers
data
the information which enters the computer
