P.1
Chapter 1
Computer Concept
Every computer operation can be divided into three stages: input, process and
output.
Q1 Give 1 example of input, process and output.
Input: _____________________________________________________________
Process: _____________________________________________________________
Output: _____________________________________________________________
Hardware
the physical part of a computer system
includes a system unit and a number of external devices attached to it
Software
a sequence of instructions
command the computer system to complete specific tasks
P.2
Hardware
composed of input devices, a system unit, output devices
Input devices
for entering commands or data into the computer
Q2 Give 4 examples of Input devices.
_____________________________________________________________________
_____________________________________________________________________
_____________________________________________________________________
System unit
contains a central processing unit (CPU), circuit boards, a power supply and storage
devices
works on data together with the software to produce processed results
Output device
The processed result can be displayed to users by different output devices.
Q3 Give 3 examples of output devices.
_____________________________________________________________________
_____________________________________________________________________
Software
Software can be classified into two types: system software and application
software.
System software
manages the operations of computer hardware
helps us operate the computer system easily
controls and facilitates the execution of the application software
Q4 Give 2 examples of System software.
_____________________________________________________________________
_____________________________________________________________________
P.3
Application software
carries out specific tasks for the user
application software cannot be run on a computer system without the presence of
an operating system
Q5 Give 2 examples of Application software.
_____________________________________________________________________
_____________________________________________________________________
Relationship between software and hardware
Type of application
software
Function
Example
Word processor
Create, edit, format, save and print
documents.
Microsoft Word
Spreadsheet
Perform calculation and data manipulation.
Create charts.
Microsoft Excel
Presentation software
Create presentations and slide shows.
Microsoft PowerPoint
Image editing software
Edit photos and graphics.
Ulead Photolmpact
Communication
software
Exchange messages between
different computers.
Microsoft Outlook