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) who work from home – Company with 50 employees and self-employed people

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 computers – requires the capabilities of a workstation or other types of powerful ▫ 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