CHAPTER 1. INTRODUCTION TO COMPUTERS. -Central processing unit CPU is the electronic device that interprets and carries out the basic instructions that operate the computer. -Data is a collection of raw unprocessed figures and symbols computer uses data to create information. -Free ware is software provided at no cost to a user by an individual or company.
-Informationis data that is organized meaningful and useful. -Information applianceis a computer with limited functionality whose main propose is to connect to the internet from home. -Information processing cycle. the series of input process, output and storage activities. -Information system hardware software data and people and procedures comprise an information system.
-Input devices any hardware component that allows a user to enter data and instructions into a computer. -Outputis data that has been processed into information. Computer process input data into output information. -Kiosk is a freestanding computer usually with touch screen that serves as an input device. -Mainframe is a large expensive very powerful computer that can handle hundreds of users.
-Memory is a temporary holding place for data and instructions -Midrange server is more powerful and larger than a workstation. -Multimedia is a power user typically work with multimedia which they combine test graphics sound video and other media elements into one application. -Operating system is a set of programs containing instructions that coordinate all of the activities among the hardware devices. -Peripheral is an external device that attaches to the system unit. -Recoursesnetworks allow users to share recourses such as hardware devices, software programs, data, and information. -Servera computer that manages the recourses on a network.
Servers control access to the software, printers and other devices on the network. -Sharewareis a copyright software that is distributed free for trial period. -Softwareis a series of instructions that tells the hardware how to perform tasks. -Storageis an area in a computer that can hold information for future use. -Storage devicesrecords and retrieves items to and from a storage medium. Six of them are floppy disk, a zip drive, hard disk drive, CD-Rom drive, CD-RW and DVD-Rom drive.
-System Softwareconsists of the programs that control the operations of the computer and its devices. CHAPTER 2. THE INTERNET AND WORLD WIDE WEB-Advanced Research Projects Agency (ARPA)an agency of the U. S. Department of Defense. ARPAs goal was to build a network that (1) would allow scientists at different locations to share information and work together on military and scientific projects and (2) could function even if part of the network were disabled or destroyed by a disaster such as a nuclear attack.
That network called ARPANET, became functional in September 1969. -Serer is a computer that manages the resources on a network and provides centralized storage area for resources such as programs. -IP Address is a short internet protocol address is a number that uniquely identifies each computer or device. -Domain name is the text version of an IP address eg.
. www. scsite. com. -Http.
Stands of hypertext transfer protocol. CHAPTER 3 APPLICATION SOFTWARE -System software consists of programs that control the operations of the computer and its devices. -Utility program is a type of soft ware that performs a specific task usually related to managing a computer its devices or its programs-Productivity software. Is software that assists people in becoming more effective and efficient while performing daily activities. -Graphics software allows you to create documents called presentation-Integrated software is software that combined application such as word processing spread sheet and dada base.
CHAPTER 4 COMPONENTS OF THE SYSTEM UNIT. -System unit is a box like case that houses the electronic components of the computer used to process data called chassis. -Central processing unit often called a processor interprets and carries out the basic instructions that operate a computer. -Memory is a temporary storage place for data instructions and information.
-Expansion slot is an operating or socket where you can insert a circuit board into the motherboard. -Expansion cards expansion ,abapter card adapter card-PORTS keyboard, usb, serial port, monitor, gameport, network, svideo out, tele, mouse, printer, speaker, microphone, FM reception. CHAPTER 8 OPERATING SYSTEM AND UTILITY PROGRAMS. -CATEGORIES OF OPERATING SYSTEMS stand alone =dos, windows 3. x, wind 95, wind nt workstation, windows 98 wind 2000, wind millennium edition, mac os, os/2 warp, unix, linux, NETORK = netware, wind nt server, wind 2000 server, os/2 warp server for e-busniness, CHAPTER 1.
INTRODUCTION TO COMPUTERS.-Central processing unit CPU is the electronic device that interprets and carries out
