Computer Concepts
Computer Concepts
Computer Concepts
1
Characteristics of a
Computer
1. It is a machine.
2. It is electronic.
3. It is automatic.
4. It can manipulate data.
5. It has a memory.
6. It has logic functions.
2
Capabilities of a Computer
1. Speed
2. Repetitiveness
3. Accuracy
4. Logical operations
5. Store and recall information
6. Self-checking
7. Self-operating
3
Limitations of a Computer
4
Main reason for
developing Computers?
Data Processing
or
Information Processing
5
Classification of Computers
6
Variations of PCs:
network computers
thin client
notebook computers
handheld computers
midrange computers
mainframes
supercomputers
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Information Processing Cycle
8
Information Processing Cycle (continued)
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Components of a Computer
System
Hardware
Software
Peopleware
Data – Information
Procedures
10
Hardware is the electric, electronic,
and mechanical equipment that
makes up a computer.
11
Input Devices
An input device is any hardware
component that allows a user to
enter data and instructions into a
computer. Examples are: keyboard,
mouse, microphone, scanner, digital
camera, and PC camera.
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Output Devices
An output device is any hardware
component that can convey
information to a user. Examples
include a printer, a ,monitor and
speakers.
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System Unit
14
Two main components on the
motherboard
Central Processing Unit (CPU), also
called a processor, is the electronic device
that interprets and carries out the basic
instructions that operate the computer.
15
Typical component of the CPU
16
Two types of computer memory
inside the computer:
20
Units to measure the
Computer memory
21
6. Gigabyte (GB) – a billion bytes or
1,073,744,824 bytes
7. Terabyte (TB) – a trillion bytes or
1,009,511,627,776 bytes
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Clock Speed – it is how fast a computer
processes
24
Information is data that is organized,
meaningful, and useful.
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Why is a Computer so
Powerful?
Speed
Reliability
Accuracy
Storage
Communications
26
Where Computers are used:
Education; Government
Graphics; Home
Retailing; Health &
Medicine
Energy; Robotics
Law Enforcement; The Sciences
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Where Computers are used: (continued)
Transportation; Connectivity
Money; Training
Agriculture; Paperwork
The Human Connection
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