Chp 1 – Introduction to Computers

Section 4-6

Mobile Computer and Mobile Device

•Mobile Computers – can be carry from place to place

•Mobile Devices – a computer device small enough to hold in your hand

Notebook Computer/Laptop Computer

•Most popular type of mobile computer•Fits in your lap•Thin and light weight•Usually more expensive then a desktop

with the same capabilities

Tablets PCs•Special type of notebook computer that

allows you to write or draw on the screen using a digital pen

•Some have attached keyboards•Especially useful for taking notes

Mobile Devices

•Usually don’t have disk drives•Store program and data permanently on

special memory inside the system unit or on small storage media such as memory cards

•Some have Internet-enable

Five Popular Types of Mobile Devices

•Smart Phones•PDA (personal digital assistant)•Handheld Computers•Portable Media Players•Digital Cameras

Game Consoles

•Mobile computing device designed for single-player or multiplayer video game

•Three popular models▫Microsoft’s Xbox 360▫Nintendo’s Wii▫Sony Playstation 3

Servers

•Controls access to the hardware, software, and other resources on a network

•Can support two or several thousand connected computer

Mainframes

•A large, expensive, powerful computer that can handle 100 or 1000 of connected users

•Stores tremendous amounts of data, instruction and information

Supercomputer

•Fastest, most powerful, most expensive computer

•Can process more than one quadrillion instructions in a single second

Embedded Computers•A special-purpose computer that function

as a component in a larger product•Everywhere – at home, in your car, and at

work

Elements of a Information System•Hardware – must be reliable•Software – need to be develop carefully•Data – entered in correctly•People – should be skilled•Procedure – readily available

Example of Computer Users

•Home users – family member who uses a computer for a variety of reason such as budgeting and personal finance

•Small Office/Home Office (SOHO) – Company with 50 employees and self-employed people who work from home

Example of Computer Users

•Mobile Users - Work on a computer a mobile computer while away from a main office, home office or school

•Power Users – requires the capabilities of a workstation or other types of powerful computers▫Example of power users: engineer,

scientist, architect, desktop publisher, and graphic designer

Example of Computer Users

•Enterprise Users – work in or interact with a company with many employees and uses a computer network that process high volume of transaction in a single day

Computer Application in Society•Education – students use computers

software to assist with learning •Finance – use computers for online

banking and online investment•Government – have Web sites to provide

citizen with up-to-date information

Computer Application in Society•Health Care – used to maintain patient

records, monitor patients, and file insurance claims

•Science – use to assist with collecting, analyzing, and modeling data

•Publisher- use to assist in designing pages and make the content of their available online

Computer Application in Society•Travel –online navigation system help

people travel more quickly and safely•Manufacturer – use computer-aided

manufacturing (CAM) to assist with manufacturing processes