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
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
a computer contains many electric, electronic, and mechanical components
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
is a collection of related webpages
Web server:
is a computer that delivers requested webpages to your computer
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
controls access to the hardware, software, and other resources on a network
a large, expensive, powerful computer that can handle hundreds or thousands of connected users simultaneously
is the fastest, most powerful computer
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
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
enables users to speak to other users over the internet
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
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
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
a print circuit board containing the principal components of a computer or other devices, with connectors into which other circuit boards can be slotted
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
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