Computer software

OPERATING SYSTEMS Definition: a powerful, and usually large, program that controls and manages the hardware and other software on a computer. All computers and computer-like devices have operating systems. https://www.youtube.com/watch?v=mINZ-YFO88c

Interface A shared boundary across which two or more separate components of a computer system exchange information. Occurs between software, computer hardware, peripheral devices, humans and combinations of these Includes desktop with graphics and the ability to locate files and folders

Windows Interface

Linux Interface

PROGRAMS AND APPLICATIONS Computer programs designed to perform a group of coordinated functions, tasks, or activities for the benefit of the user. Examples? Horizontal Apps – popular, widespread, used for general purposes Vertical Apps – niche, used for specific industry Web Applications vs. Mobile Applications Killer Apps – new and popular apps that only run on one type of platform

HARD DRIVES AND PARTITIONS Hard drives use disk partitioning or disk slicing to create different locations to store information. Partitions are sectors or regions on a hard drive.

Horizontal vs Vertical Apps

Folders, Files and Paths Entries or information stored on your computer Represented by binary coding or icons Can be saved by used or hidden by computer Saved in different formats depending on computer Folders Store several files in a separate compartment Option to be hidden or shared over a network Paths The direct location of files and folders in a system Represented by a series of characters including the drive label and the filename or folder name

LAN, WAN, MAN & OTHER NETWORKS Networks – Group/System of Interconnected Computers Range based on size and scale LAN - Local Area Network WAN - Wide Area Network WLAN - Wireless Local Area Network MAN - Metropolitan Area Network SAN - Storage Area Network, System Area Network, Server Area Network, CAN - Campus Area Network, Controller Area Network, or sometimes Cluster Area Network PAN - Personal Area Network

LAN vs WAN vs WLAN Most known category of networks LAN: Local Area Network – connects network devices over a short distance WAN: Wide Area Network – connects networks over large distances Prime example: The Internet Routers connects LANS to WAN WLAN – Wireless Local Area Network – LANs that use Wi-Fi technology

NIC – Network Interface Cards a computer hardware component that connects a computer to a computer network and allows devices to network with other devices Fits in a slot in the computers motherboard Provides hardware interface between the computer and the network

Router Routers are small electronic devices that join multiple computer networks together via either wired or wireless connections.

Network Topology The arrangement of various elements of a computer network Includes nodes, links and different structures of a computer network Physical Topology - physical link to other devices in network Logical Topology – how data flows within a given network

Wireless Network vs Wired Network https://www.youtube.com/watch?time_continue=71&v=u21lNHy072U What are some advantages and disadvantages?

IP – Internet Protocol Address 69.89.31.226 Numerical label assigned to each device connected to a network Identifies the host or network interface and location addressing

DNS – Domain Name System Internet service that translates domain names into IP addresses GPS for your computer