Are you going to pass this test
hell yeah
What are the 4 different types of computers?
1. Personal computers
2. Mobile computers
3. Mainframe computers
4. Super computers
definition of computer
a device that performs the basic four functions. Input, Process, Output, and Storage
Input
accepting raw data entered by the user
Process
Convert the raw data entered by the user
Output
Give a corresponding result
Storage
All results are stored now
GIGO
Garbage in, garbage out. The computer only processes what is given
Personal Computer
most common type of computer and can be either a laptop , PC, or a desktop
Mobile Computers
Fits in your hand and it commonly has touch screen
Mainframe Computers
This type of computer allows hundreds of users to perform their daily tasks simultaneously and they are commonly found in a server room
Super computers
these are the fastest computers on earth, and they can perform trillions of functions per second
What is the hardware?
The physical components of a computer.
What is software?
programs that tell your computer what to do and what not to do. Not physically able to touch this.
Different parts of a personal computer
keyboard, mouse, monitor, and system unit
system software OS
Consists of several computer programs that facilitate all computer activities
Application software
designed for a specific operating system
Mouse
you know what a mouse is...
keyboard
Used to enter text and numeric data
monitor
Needed to display the output of the process data which is now information
Motherboard
main system board
Hard Disk
Also called the Hard Drive. Data is stored permanently here. The amount of storage is usually measured in gigabytes.
Modem
used to connect to the internet in order to surf the web
Speakers
they output sound. wow.
Power source
supplies guess what...the power of electricity
generation in computers
a change in the technology of the already existing system
First Generation
(1946-1959) Vacuum tube based
Second Generation
(1959-1965) Transistor based
Third Generation
(1965-1971) Integrated circuit based
Fourth Generation
(1971-1980) VLSI microprocessor based
Fifth Generation and onwards
(1981-today) ULSI microprocessor based
Social Media
An exciting new trend which allows one to communicate and share information and pictures among friends and family using an online networking site
What makes a computer so powerful?
high speed, can store lots of information and date, its easy to use, its portable, economical, accurate and convenient
LAN
Local area network
Basic LAN structure
The medium, the networking model, and network topology which provides a mean of communication between network nodes
Network devices
HUB, bridges, switch, and router
What does ISP stand for?
Internet service provider
What is an ISP?
A company that provides individuals and other companies access to the internet
Web Browser
A software program that allows a user to locate, access and display web pages
Browser Cookies
Pieces of information that are stored on the browser even after its use has been terminated.
URL
Uniform resource locator is a software program used to access and view web pages
Domain
Used to identify one or more IP addresses
TCP
Transmission control protocol
IP
Internet protocol
TCP/IP
Used to govern the connection of computer systems to the internet
Internet
Global system of interconnected computer networks that use the standard internet protocol suited to serve billions of users worldwide
Intranet
A private network that uses IP technologies to securely share information of protocol of a certain organization
Extranet
A private network that uses IP and network connectivity
10 categories of websites
Information, communication, entertainment, work, school, relationships, market, sexuality, self-expression, and asking for help
Who invented the internet?
Tim Berners-Lee
Role of the ISP
It refers you to a company that provides service for a fee
What are other types of providers?
A software application that is used to locate, retrieve and display content from the WWW
Mobile Broswer
Similar to a web browser, but is optimized to display content even after its use has been terminated
Two main components of a URL
Protocol and domain name
Domain names
.com .edu .gov .int .mil .net .org
Domain names by country
.uk .us .au .de .fr .nl .mx
E-Commerce
Any kind of business/transaction that involves exchanging information on the internet
B2B (Business to Business)
Involves companies doing business with each other
B2C (Business to Consumers)
Consists of businesses selling to the general public through shopping cart software without the need of any human interaction
C2B (Consumers to Business)
Consists of consumers posting a project with a set budget online and companies bid on the project; the consumer reviews the bids and selects a certain company
C2C (Consumers to Consumers)
Takes place within online classified ads, forum, or marketplaces where individuals can buy and sell their goods