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38 terms

Intro to Computers

Introduction to Computers (HD111), Lincoln Online, Criminal Justice Course
STUDY
PLAY
client
computer connected to a server
server
computer that controls access to the hardware and software on a network and provides a centralized storage area for programs, data, and information
operating system
set of computer instructions that controls the allocation of computer hardware
application programs
perform an application-related function such as word processing
service packs
updates containing fixes and enhancements to the operating system
user interface
combination of hardware and software used to communicate with and control computer
monitor
displays messages and provides information
user-friendly
refers to software easily used by individuals with limited training
graphical user interface/GUI
user interface displaying graphics as well as text when communicating with user
Welcome screen
shows names of all users on computer
mouse
pointing device used with Windows which may be attached to computer by cable or wirelessly
point
moving the mouse across flat surface until pointer rests on item of choice
click
press and release primary mouse button
computer
electronic collection of hardware components that function together as a system
information processing cycle
input, process, output, and storage
data
collection of unprocessed items
information
conveys meaning and is useful to one or more people
end user, computer users, users
people who use the computer directly or the information it provides
computer program or software
detailed set of instructions that tell the computer what to do
primary components of computer
input devices, processor, memory, output devices, storage devices, communication devices
system unit
case containing electronic components of computer used to process data
input device
any hardware component allowing user to enter data, programs, commands, and user responses
keyboard
input device containing keys pressed to enter data
stylus
small device using pressure instead of ink to write, draw, or make selections
touchpad
flat pointing device located near keyboard on notebook computers
motherboard
main circuit board of system unit
processor/CPU
interprets and carries out basic instructions that operate a computer
control unit
interprets instructions
arithmetic/logic unit
performs logical and arithmetic processes
memory/RAM
electronic components temporarily storing instructions waiting to be executed by processor
kilobyte/K or KB
approximately 1,000 memory locations
megabyte/MB
approximately one million memory locations
gigabyte/GB
approximately one billion memory locations
memory location or byte
stores one character
output devices
makes information resulting from processing available for use
impact printer
prints by striking an inked ribbon against paper
nonimpact printer
forms characters by means other than striking ribbon against paper
photo paper
produces photo-quality pictures