Learning Objective After completing this chapter, you will be able to: • Discuss why it is important to learn about information technology. • Define IT, computer system and its operations. • Explain types of computer.
Large & Expensive for Scientist 1st Programmable electronic computer, ENIAC: 1946
All-in-One PCs HP TouchSmart IQ804t series
Why is it essential to learn about computers? • Knowing about computers can help you • to buy the right one • get the most efficient use out of it • have a much higher level of comfort and confidence along the way • select major.
Major Selection • Information Technology: IT • Computer Science:CS • Telecommunications Science:TS • Technology Management: TechM • Business Data Analysis: DA
Information Technology (IT) • Is a general term that describes any technology that helps to produce, manipulate, store, communicate, and/or disseminate information. • Information and Communication Technology (ICT)
IT or Computer System consists of • Computer (Hardware) • Software • Network • Database • Peopleware
Overview of Computer System Structure Inside Computer
Software • System • Application
Network • Communication • Internet
Peopleware • Users or end users • Programmer • System analyst
Overview of Computer System Structure Five Primary Operations
Types of Computer • Personal computer, Microcomputer • Minicomputer or Midrange server • Mainframe computer • Super computer Terminals Mainframe computer
Tablet iPad Samsung Galaxy Tab
Rack vs. Blade Rack Blade
CRAY-1 Supercomputer Photo by Eric Long/NASM, National Air and Space Museum, Smithsonian Institution
Course Outline • Textbook • Using Information Technology, A Practical Introduction to Computers & Communications, 9th Edition, Brian K. Williams and Stacey C. Sawyer, McGraw-Hill, 2011.