➢ Knowledge and understanding
of computers and their uses
➢ Computers are everywhere
computer literacy
Electronic device operating under the control of
instructions stored in its own memory
computer
Accepts ______
-Raw facts, figures, and
symbols
data
Processes data into
____________
-Data that is organized,
meaningful, and useful
information
What is the information processing cycle?
➢ Input
➢ Process
➢ Output
➢ Storage
➢ Communication
Hardware used
to enter data
and instructions
input device
Hardware that
conveys
information
to one or more
people
output device
➢ Case
containing
electronic
components
used to process
data
system unit
What are two main components on the motherboard?
-Central Processing Unit (CPU)
-Memory
Also called a processor
Central Processing Unit (CPU)
Central Processing Unit (CPU)
Also called a _________
processor
Consists of electronic components that store
instructions waiting to be executed and data needed by
those instructions
Memory
➢ Holds data, instructions, and information
for future use
storage
2 types of storage
Storage media
Storage device
Physical material on which data, instructions,
and information are stored
Storage media
Records and retrieves items to and from
a storage medium
Storage device
Portable, thin
memory cards
used in:
-Digital cameras
- Handheld computers
storage media
Thin, circular,
flexible disk
enclosed in rigid
plastic shell
floppy disk
➢ Provides much
greater storage
capacity than a
floppy disk or
Zip® disk
➢ Small and
lightweight enough
to be transported
on a keychain or
in a pocket
USB flash drive
➢ Provides greater storage
capacity than a
floppy disk, Zip disk, or
USB flash drive
➢ Most are housed inside
of the system unit
hard disk
➢ Flat, round, portable metal disc
▪ CD-ROM
▪ DVD-ROM
compact disc
communications device
What are the advantages of using computers?
Speed
Reliability
Consistency
Storage
Communications
What are the disadvantages of using computers?
-Violation of Privacy
-Impact on Labor Force
-Health Risks
-Impact on Environment