LITE

• Any physical component of a computer system that contains a circuit board, Integrated Circuits (ICs), or other electronics.

  COMPUTER HARDWARE
• Different components of computer hardware

  INPUT DEVICES, OUTPUT DEVICES, SYSTEM UNIT
• A piece of hardware that sends data to a computer.

  INPUT DEVICES
• A piece of computer hardware that receives data from a computer and then translates that data into another form.

  OUTPUT DEVICE
• Also known as a "tower" or "chassis," is the main part of a desktop computer.

  SYSTEM UNIT
• 2 COMPUTER SOFTWARE

  APPLICATION SOFTWARE

  SYSTEM SOFTWARE
• It is a computer software package that performs a specific function directly for an end user or, in some cases, for another application.

  APPLICATION SOFTWARE
• It is a type of computer program that is designed to run a computer's hardware and application programs.

  SYSTEM SOFTWARE
• It can’t run independently

  because it is not able to run

  without the presence of system

  software

  APPLICATION SOFTWARE
• It can run independently as it

  provides the platform for the

  running application software.

  SYSTEM SOFTWARE
• A sequence of computational steps that transform the input into the output.

  COMPUTER ALGORITHMS
• It helps us to determine which algorithm is most efficient in terms of time and space consumed.

  ANALYSIS OF ALGORITHMS
• Computer networks are the basis of communication in IT. They are used in a wide variety of ways and can include many different types of networks.
• A computer network is a set of computers that are connected so that they can share information.
• spanned across whole building, city

  GEOGRAPHICAL SPAN
• connected to left and right peers only

  INTERCONNECTIVITY
• private network belongs to single autonomous system.

  ADMINISTRATION
• has various types such as client-server, peer-to-peer or hybrid.

  NETWORK ARCHITECTURE
• collection of LAN

  METROPOLITAN AREA NETWORK
• collection of all MAN

  WIDE AREA NETWORK
• Types of networks

  PAN, LAN, MAN, WAN
• is a network concerned with exchanging

  information in a person's vicinity.

  PERSONAL AREA NETWORK
• is a group of computer and peripheral devices which are

  connected in a limited area such as school, laboratory, home, and office building.

  LOCAL AREA NETWORK
• is another vital computer network that is spread across a large

  geographical area.

  WIDE AREA NETWORK
• is consisting of a computer network across an entire city,

  college campus, or a small region. This network type is larger than a LAN, mainly limited to a

  single building or site.

  METROPOLITAN AREA NETWORK
• is a wireless distribution method for two or more devices that use

  high-frequency radio waves and often include an access point to the Internet.

  WLAN
• is a type of network that allows consolidated, block-level data

  storage. It is mainly used to make storage devices, like disk arrays, optical jukeboxes, and

  tape libraries.

  Storage Area Network
• is used for a local network. It offers high-speed connection in

  server-to-server and processor-to-processor applications. The computers connected on a

  SAN network operate as a single system at relatively high speed.

  SYSTEM AREA NETWORK
• is always built using two or more interconnected computers to

  form a local area network (LAN) within the home.

  HOME AREA NETWORK
• is a networking technology that helps you to integrate into structured cabling. It

  allows you to resolve the issues of supporting Ethernet protocols and network apps.

  POLAN
• is a computer network that helps enterprise companies

  with several disparate offices connect those offices to each in a secure way over a network.

  It is mainly set up to share computer resources.

  EPN
• is a

  computer network that links the buildings and consists of two or more local area networks

  (LANs) within the limited geographical area.

  CAMPUS AREA NETWORK
• is a private network that uses a public network to connect remote sites or users.

  VPN
• an American painter, and inventor, transmits

  the first electric telegraph message, eventually making it possible for people to send messages around the world in minutes.

  SAMUEL FINLEY BREESE MORSE
• When was the transmission of first telegraph message?

  1844
• a Scottish-born American inventor,

  scientist, and a teacher of the deaf developed the telephone and the refinement of the phonograph (1886).

  ALEXANDER GRAHAM BELL
• accesses a computer in New York using a teletype (remote

  terminal) in New Hampshire, connected over a telephone line.

  GEORGE STIBITZ
• Published the paper "As We May Think", which anticipates the development of the World Wide Web by half a century. 1945

  Vannevar Bush
• YEAR THAT AT&T and Bell commercially sold the developed modern modems.

  1958
• Introduced the concept of communication between computers thru sending

  "message blocks," which gave a similar idea and coined the term "packet switching."

  LARRY ROBERTS 1958