Ict1100
4/7/2012
Learning Objectives
Lecture ONE
Introduction to Computers
Reference: Shelly Cashman, Discovering Computers 2011, Living In Digital World, International Thompson Publishing,
•Define the computer terms. •Describes 5 components of computer. •Discuss advantages and disadvantages using computers. •Distinguish between system software and application software. •Differentiate among types, sizes and function of computer in each categories. Describes computer users. Describes how society uses computers.
About The Computer
Why is a computer so powerful? What does a computer do?
What is a computer?
Chapter1 / slide 4
About The Computer
The Computer System
The electronic, electric & mechanical equipment or physical components that make up a computer
DEFINITION
A Computer is
An electronic machine Control instruction
The series of instruction or programs that tells the hardware how to perform tasks
Chapter1 / slide 5 Chapter1 / slide 6
1
4/7/2012
Chapter 1
Introduction to Computers
Tasks Perform By Computer produces results
The Information Processing Cycle
accept data
manipulate data
INPUT
PROCESS
OUTPUT
store data
link data
STORAGE
Chapter1 / slide 8
Chapter 1
Introduction to Computers
The Components of a Computer
The Characteristics of Computer
WHY IS COMPUTER SO POWERFUL?
INPUT devices Software PROCESS devices
(system unit)
Software
OUTPUT devices
Speed
COMM. devices
Communication Storage Accuracy
GIGO
Software
Reliability
STORAGE devices
Chapter1 / slide 9
Chapter1 / slide 10
The Advantages of Computer
The Advantages of Computer
Speed – computers do everything in fraction of seconds. They can perform complex calculations, recall stored information, transmit information from one location to another, and move objects around a computer screen almost instantaneously. Accuracy/ Consistency– computers carry out activities/ results the same
Learning Objectives
Lecture ONE
Introduction to Computers
Reference: Shelly Cashman, Discovering Computers 2011, Living In Digital World, International Thompson Publishing,
•Define the computer terms. •Describes 5 components of computer. •Discuss advantages and disadvantages using computers. •Distinguish between system software and application software. •Differentiate among types, sizes and function of computer in each categories. Describes computer users. Describes how society uses computers.
About The Computer
Why is a computer so powerful? What does a computer do?
What is a computer?
Chapter1 / slide 4
About The Computer
The Computer System
The electronic, electric & mechanical equipment or physical components that make up a computer
DEFINITION
A Computer is
An electronic machine Control instruction
The series of instruction or programs that tells the hardware how to perform tasks
Chapter1 / slide 5 Chapter1 / slide 6
1
4/7/2012
Chapter 1
Introduction to Computers
Tasks Perform By Computer produces results
The Information Processing Cycle
accept data
manipulate data
INPUT
PROCESS
OUTPUT
store data
link data
STORAGE
Chapter1 / slide 8
Chapter 1
Introduction to Computers
The Components of a Computer
The Characteristics of Computer
WHY IS COMPUTER SO POWERFUL?
INPUT devices Software PROCESS devices
(system unit)
Software
OUTPUT devices
Speed
COMM. devices
Communication Storage Accuracy
GIGO
Software
Reliability
STORAGE devices
Chapter1 / slide 9
Chapter1 / slide 10
The Advantages of Computer
The Advantages of Computer
Speed – computers do everything in fraction of seconds. They can perform complex calculations, recall stored information, transmit information from one location to another, and move objects around a computer screen almost instantaneously. Accuracy/ Consistency– computers carry out activities/ results the same