Computer basics, hardware,software

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Terms in this set (...)

cpu
central processing unit
bps
bits per second
cad
computer aided design
alu
arithmentic logic unit
Hz
hertz
gui
graphical unit interface
cli
command line interface
ram
random access memory (temporary)
rom
read on memory (permanent)
wi-fi
wireless fidelity
dpi
dots per inch
lan
local area network
GbPS
gigabits per second
url
uniform resource locator
html
hyper text markup language
p2p
peer to peer
http
hyper text transfer protocol
dba
data base administrator
ccna
cisco certified network associate
ftp
file transfer protocol
ups
uninterruptible power supply
wysiwyg
what you see is what you get
ssd
solid state drive
vga
video graphics array
rtf
rich text format
mos
microsoft office specialist
ic3
internet computing core certification
os
opperating system
mbps
megabites per second
pdf
portable document format
hdmi
high definition multimedia interface
dvi
digital visual interface
what makes a computer a computer?
receives data input
process data
stores data
produces a result
computer input can be supplied by:
a person
environment
by another computer
computer input examples are:
words and symbols in a document
numbers for calculation
photos from a camera
temperatures from a thermostat
audio signals
instructions from a computer program
how do I keep my computer in good working condition?
use a UPS
keep fans clean and clear
what are input devices?
keyboard
mouse
touch screen
classes of computers:
supercomputer
mainframe
server
personal computer
other digital devices
what is hardware?
objects that you can actually touch
what is software?
untouchable, it exists as ideas, concepts, and symbols, but it has no substance
parts of a computer
display device
hardisk drive and network circurity
CD/DVD
USB port
memory card slot
speaker
touchpad
keyboard
microphone
camera
printer
measurements
hertz- measures processor speed in cycles per second
pixels- measures monitor resolution
bps- measures data transformation speed in bits per second
what's inside?
motherboard- system board or main board (green)
integrated circuits
microprocessor
what is digital?
devices that work with discrete- distinct and separate data- 1 and 0
what is analog?
an analog device works with continous data
what are the 3 major components of a computer?
what are they affected by?
speed,power,capability
microprocessors, memory, storage
things to know about microprocessors
know ALU
ALU registers and holds data
control unit directors microprocessor
processor speed measured in GHzd
what is the difference between RAM and ROM
RAM is temporary and ROM is permanant
storage devices
hard drive
CD
DVD
BRD
USB
function of hard drive
a high capacity, self contained storage device containing a read-write mechanism plus one or more hard disks
function of USB port
universal serial bus, suports data and transfers rates of 12 mbps
function of CD-ROM drive
the place where a computer disk can be held, read and played
function of RAM (looks like a ruler)
data storage in computers located on the motherboard and is lost when computer is turned off
function of dial-up card
electronic credit card machine that sends data through an analog phone
function of graphics card
a printed circut board that controls the output to display a screen
funciton of casing
cover of shell
funciton of power supply
source of power convert AC low power AC
function of fan
cool down the computer
function of CD-R/RW Drive
CD reader
function of ribbon cable
transmiting element system wires consisting of several insulated together
function of the motherboard
printed wircircuit board containing computers of a computer
function of processor
machine that processes something
what is a software?
programs form software
an operating system is software that helps a computer control itself to operate efficiently and keep track of data
application data helps users apply the computer to perform specific tasks (microsoft,word,excel)
what is software (continued)
instructions that tell a computer how to carry out a task
software applies rules of algorithms to process data
types of software
application software
system software
operating systems functions are:
manage files
interact with peropheral devices
send data over networks
filter out devices
what is DOS?
disc operating system
windows operating systems are for
microsoft computers
operating systems are for
apple computers
android operating systems are used for
mobile devices
3 facts about linux
frequently used as an operating system for servers
less popular than windows or OSX for computers
general public license (GPL)
document production software is used for
word processing and/or desktop publishing
spreadsheet software uses rows and columns
to create a model or representation or a situation like a checkbook, tax form, or gradebook
a data base is a
collection of data that is stored on one or more computers
where can data bases be stored?
on a personal computer,server,mainframe and super computer
well-known database server software is
oracle,mySQL,SQlite