chapter 1. what is computer fluency? the knowledge possessed by people who are able to navigate the...
Post on 20-Dec-2015
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What is computer fluency?
The knowledge possessed by people who are able to navigate the digital world successfully
NOT THIS
What is a computer?
A machine that, under a program’s direction, performs four basic operations: input, processing, output, and storage
What is a program?
A list of instructions that tells a computer how to perform the four basic operations
What is input?
Data entered into the computer system for processing
Electrical impulses representing words, numbers, images, or sounds
What is processing?
Performing arithmetic or comparison (logical) operations on the data
4 + 16 = 20
728 > 546
Arithmetic
Logic
What are the computer’s physical components?
HARDWARE Input devices- Enable users to put data into the
computer for processing
Processing circuitry- Components located in the system’s case that transform data into information Output devices- Peripherals that show the
results of processing
Storage devices- Used to hold all the programs and data that the computer uses
Communication Devices- Used to move data between computers
What are processing devices?
Motherboard
Central Processing Unit- CPU
Random Access
Memory- RAM
Expansion card
What are storage devices ?Hard Drive
Floppy Disk Drive
Zip DriveCD / DVD Drive
Jazz Drive
Tape Drive
Micro Drive
What are the different types of computers?
Desktop- PC, Microcomputer
Notebook- Laptop
Workstation
Personal Digital Assistant- PDA, Handheld, Pocket PC
Supercomputer
Mainframe
Minicomputer
Server
What are the different types of software?
System software- All programs that help the computer function properly
Application software- All the programs you use to perform a task such as writing a letter or browsing the World Wide Web
System software Application software
What is an operating system?
System software that . . .
Coordinates the various functions of the computer’s hardware
Provide support for running application software
Provide utility programs for optimizing computer performance
What are the types of operating systems?
Command-line interface- Users type instructions at the keyboard, one line at a time. Examples MS-DOS, PC DOS, UNIX
Graphical user interface (GUI)- Users choose items from menus by using a pointing device to click on icons which represent resources and commands. Examples Windows, Mac OS
What is a software suite?
A collection of full featured standalone programs that usually share a common command structure and have similar interfaces
MS WORD MS EXCEL MS POWERPOINT
MS ACCESSMS FRONT PAGE
What are internet services? Standards and software that make internet
resources, such as Web pages, files and electronic mail available to users
Electronic mail- (e-mail)World Wide Web- (WWW)
File Transfer Protocol- (FTP)
Instant messaging
Electronic commerce- (e-commerce)