guide to identifying computers
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Guide to Identifying Computers . Mrs. Staniec. Objectives:. Identify different types of computer devices. Identify the role of the central processing unit. Identify the difference between an operating system and application software. . Computers are EVERYWHERE !. What is a COMPUTER?. - PowerPoint PPT PresentationTRANSCRIPT
GUIDE TO IDENTIFYINGCOMPUTERS
Mrs. Staniec
Objectives:1. Identify different types of computer
devices.
2. Identify the role of the central processing unit.
3. Identify the difference between an operating system and application software.
Computers are EVERYWHERE!
What is a COMPUTER?
An electronic device, operating under the
control of instructions stored in its own
memory unit, that can accept data
(input), manipulate the data according to
specified rules (process), produce
information (output) from the processing,
and store the results for future use.
Brief History of Computers A computer originally meant a
mathematician. Gradually developed into machines. The 1st computer in the computing world
is known as ENIAC (Electronic Numerical Integrator and Calculator).
ENIAC
Computer Anatomy Computers have three main
components:
1. Hardware
2. Operating System
3. Applications
COMP
UTER
S
Hardware
Speaker
MouseKeyboard
Monitor
Tower Case
• The physical components of a computer system.
Operating System• Program that controls the computer,
enabling the hardware and application software to work together.
• For example, Windows 7, Mac OS X, etc.
Applications• Set of instructions that performs tasks and extends the functions of the computer.
• Also known as a program or software.
How Computers Work Three stage
process:1. Input2. Processing 3. Output
Categories of Computers Mainframes (1940s -
1970s) Big Powerful Support many users
Supercomputers Large mainframe Hundreds of CPUs Single task focus
For example, tallying census results
Categories of Computers Minicomputers
Older Like small
mainframes
Categories of Computers Microcomputers
Originally for single user
Called PCs Desktop systems Portable systems
Categories of Computers Handheld Computing
Devices Smartphone GPS Apple iPod E-Book Reader
Connecting Computer Systems
Microcomputers Decentralized processing Flexible storage
Decentralized Centralized on server
Sharing of resources through networks LAN (Local Area Network) WAN (Wide Area Network) Wireless (WiFi)
Connecting Computer Systems
Connecting to the Internet Single computing device or LAN (Local Area
Network) Use routers to connect
Microcomputer Networks Sharing resources
Storage
Printers
Scanners
Applications
In-class Activity Complete Chapter 1 Review Questions