Computers midterm

what is a computer- you have to know word for word

an electronic device operating under the control of its instructions, stored in its memory that accepts data, processes data, processes information and stores information

where are the instructions for a computer

in its memory

IPO stands for

input, process, output

hardware

The physical components of a computer. tangible

software

the programs (instructions) that tell the computer what to do

examples of hardware input devices

keyboard, mouse

output hardware devices

printer, speaker, fax screen

difference between memory and storage

in memory- each location is accesible

storage- only accesible in large chunks, to manipulate it you have to pull it out to bring to memory

memory (computer)

a place where information is stored

storage (computer)

maintaining encoded information in memory over time= saving data in file on hard disk

what happens when you open a document

You are making a copy, transferring it from storage to memory.

The original stays in storage

save as (what does it do)

original file is still there, you are making a copy that also goes into storage

save (what does it do)

gets rid of old version and saves the new version

why do you need storage (why isn't memory good enough)

1) if something happens to the computer, (like losing electricity) everything in memory is lost but storage is saved

2) memory isn't big enough to save everything, storage has much more space

another name for memory

RAM-

random access memory

example of storage

hard drive

external hard drive

storage outside of computer, it can connect. its beneficial if you want a lot of info on more than one comp

2 types of hard drive

hard disk- uses magnetic charges, positive or negative

solid state drive- uses same tech as flashdrive. no moving parts only flowing energy so moves faster than hard dis

cloud storage

An Internet service that provides remote storage saved by the computer to computer users.

advantages of cloud

can open larger files, dont lose your file ever, can access from different computers so other people can see

internet

A network of networks that's the largest network in the world, connecting billions of computers globally.

computer network

Computers connected together for the purpose of sharing information and resources ex: printer

internet service provider

A company that provides access to the Internet for a fee.

what does router do

connects the computers to the internet

what does cybersecurity do

makes sure computer and networks are secure so hackers cant access the info

web page

what comes up when you put in a url

examples of browsers

google, safari, firefox

browser

program you use to view a webpage

world wide web

a set of all the webpages that are scattered all over the world but are stored on webpages which are connected to the internet

website

a group of organization's webpages

web server

delivers requested webpages to your computer or mobile device

hosting company

the web server for many companies, must be running 24/7

ip

Internet Protocol- rules that are followed between comp connected to internet

why do you need to be connected to hosting company

the ip stays the same because its on 24/7, so if your computer breaks you get a new ip

what is a url

uniform resource locater, a link

name everything: https://www.touro.edu/las/fallschedule.pdf

protocol- https://domain name- quizlet.com
top level domain- .com
path- las
page- fallschedule.pdf

what is a domain name

name organization has (general to more specific as the url goes)

what is a sub domain name

to bring you to a direct site page- more specific

<formatting is in>

tags

database

collection of stored info

static webpage

ex: information page, not interactive

dynamic webpage

created on the spot based on your info or database

ethernet cable

connects your computer to the network through the router with a wire

whats faster- wired or wireless

wired

what does a router do

directs info into computer

malware

malicious software- software with the sole goal of causing harm

What is a virus in the context of computers?

A computer program that does harmful things to the computer.

What is one example of what a computer virus can do?

Delete important files.

what can malware do

watch you

how does a scammer get a virus on your computer

downloading files onto it or inserting flashdrive

ransomware

when scammers take info and only give it back for money