Chapter 1

Computer definition:
is an electronic device, operating under the control of instructions stored in its own memory
Digital literacy:
involves having a current knowledge and understanding of computers, mobile devices, the Internet, and related technologies
History of computers:
the concept began in 1833 (programmable computer) combination of hardware and software
Input device:
allows you to enter data and instructions into a computer
Output device:
hardware component that conveys information to one or more people
IPOS cycle:
information processing (Input, Process, Output, and Storage)
RAM(Random Access Memory):
allows data items to be read and written in roughly the same amount of time regardless of the order in which data items are accessed
Network:
is a collection of computers and devices connected together via communications devices and transmission media
Touchscreen Gestures:
tap, double tap, press and hold, drag or slide, swipe, stretch, and pinch
CPU (Central Processing Unit):
or microprocessor, the heart or engine of computer
Types of Storage Devices:
storage media, a computer keeps data, instructions, and information on a storage media. Storage device, records (writes) and/or retrieves (reads) items to and from storage media
Hardware:
a computer contains many electric, electronic, and mechanical components
Internet:
is a worldwide collection of networks that connects millions of businesses, government, agencies, educational institutions, and individuals
Web (World Wide Web):
is a global library of information available to anyone connected to the internet
Web pages:
the web consists of a worldwide collection of electronic documents, each of which is called a webpage
Website:
is a collection of related webpages
Web server:
is a computer that delivers requested webpages to your computer
Browers:
is software that enables users with an Internet connection to access and view webpages on a computer or mobile device
Social Network:
encourages members to share their interests, ideas, stories, photos, music, and videos with other registered users
Types of Computer Users:
Personal computer, Server, and Mainframe
Personal computer:
can perform all of its input, processing, output, and storage activities by itself and is intended to be used by one person at a time
Server:
controls access to the hardware, software, and other resources on a network
Mainframe:
a large, expensive, powerful computer that can handle hundreds or thousands of connected users simultaneously
Supercomputer:
is the fastest, most powerful computer
Software:
also called a program, tells the computer what tasks to perform and how to perform them
User interface:
describes the way the user communicates with the computer
Memory:
consists of electronic components that store instructions waiting to be executed and the data needed by those instructions
Data & Information:
Input (data) Output (Information) often store the data and resulting information for future use
Malware (Malicious software):
software that acts without a users knowledge and deliberately alters the computers and mobile devices operations
VoIP:
enables users to speak to other users over the internet
FTP:
users can transfer items to and from other computers on the Internet
Operating system:
is a set of programs that coordinates all the activities among computer or mobile device hardware
Application Software (application, app):
consists of programs designed to make users more productive and/or assist them with personal tasks
Wiki:
a collaborative website that allows user to create, add to, modify, or delete the content via their browser
Mobile device:
is a computer device small enough to hold in your hand
User:
a person who uses or operates something, especially a computer or other machine
Power supply:
is an electronic device that supplies electric energy to an electrical load
Motherboard:
a print circuit board containing the principal components of a computer or other devices, with connectors into which other circuit boards can be slotted
Viruses:
a malware program that, when executed, replicates by inserting copies of itself into other computer programs, data files, or the boot sector of the hard drive
Programmer:
a person who writes programs for the operation of computers, especially as an occupation
LCD Panels (RGB):
is a flat panel display, electronic visual display, or video display that uses the light modulating properties of liquid crystals