COMPUTER TECHNOLOGY

1. INTRO NOTES – Warning! This will be on a test! COMPUTER TECHNOLOGY

2. What is a Computer? A computer is an electronic device that: • Accepts input • Processes data • Stores data • Produces Output

3. What are the types of computers?

5. SOFTWARE vs HARDWARE A set of instructions, a program Equipment HARDWARE Input Devices Keyboard Microphone Scanner Output Devices Printer Screen/Monitor Fax Speakers • SOFTWARE • Microsoft Office Suite • Word • Excel • Access • PowerPoint • Publisher • Outlook • Windows Movie Maker

7. Binary Language • A computer uses a binary language to work • Binary means “2” • Series of ON and OFF switches • 1 and 0 in binary code • The more switches you have, the more combinations of ON and OFF you can make

8. Bit • Smallest unit of a computer program • This is the series of 1’s and 0’s • “Bit” stands for binary digits • Turn the circuits on and off • Nibble- A group of 4 bits

9. Byte • 2 nibbles or 8 bites= 1 Byte • A basic unit of instruction • A character in the alphabet, a space, a number, symbols, etc. • If you press a key on the keyboard, it is translated into a byte

10. How does it work? • The smallest unit of storage is a Bit. It takes 8 bites to equal 1 Byte. • Information is stored in BYTES – a basic unit of instruction. Every character in the alphabet, a space, a number, symbols—every time you press a key on the keyboard, you create a BYTE!

11. STORAGE SPACE • Bite – smallest unit of storage • BYTE – a unit (one letter, number, etc.) • KILOBYTE – 1000 bytes • MEGABYTE – 1,000,000 (one million) bytes • GIGABYTE – 1,000,000,000 (one billion) bytes • TERABYTE – 1,000,000,000,000 (one trillion) bytes

12. PROGRAM • A set of computer instructions that is read by the computer to do tasks • A FILE and a PROGRAM are not the same thing!

13. NETWORK • LAN – Local Area Network – within a building • WAN – Wide Area Network – between buildings • Share information, programs, printers across the network

14. ERGONOMICS • Describes computer environment • Comfort level of user • Room temperature • Chair comfort • Wall texture • Lighting • Window Coverings • Monitor and keyboard tilting

15. PASSWORD • A secret code that only the user knows to get into his/her files • Do not share this password with anyone, as it breaks down the security system

16. CLOUD "The cloud" refers to services and technologies that allow computing to take place over the internet in real time. Cloud computing lets users utilize services without having to purchase hardware or install software since it is all web-based • Common cloud technologies • Gmail • Facebook • Skype.

17. SOCIAL MEDIA refers to the set of web-based and mobile technologies that are used for communication and interaction Can include: • Facebook • Instagram • Twitter

18. VIRUS • A computer program someone writes to be a trouble-maker or to cause damage • Usually attached to an innocently named file or email and when the file is opened, it causes the virus to drop into the computer system. • If introduced on a network, consequences can be devastating

19. Cookies Internet programs that keep track of what type of sites you have visited and then sell that information to companies of the same type of sites … • Good for business because they target people that like their type of sites and have an increased chance of making a sales • Good for customer since they see sites of interest • Bad for customer since they lose part of their privacy and cookies take up room on the hard drive and could slow down the computer’s speed

20. Jobs and Wozniak • PC’s were invented in 1977 by Steve Jobs and Steve Wozniak—19 years old! • Steve Jobs also invented the iPod!

21. Pictures of First PC’s Steve Jobs and Steve Wozniak’s first personal computer Courtesy of the Smithsonian’s Museum of American History in Washington, D. C. Wang Word Processor—only word processing! But no more problems with “typos”! Note the very small screen. Courtesy of the Smithsonian’s Museum of American History in Washington, D. C.

22. Impact of Jobs and Woz • Founded Apple, Inc. • Name came from an apple orchard commune in Oregon that Steve Jobs belonged to with his girlfriend • “Apple” comes before “Atari” in the phonebook

23. Impact of Jobs and Woz • First to mass market PC- you didn’t have to put it together • Went for the school market • The new generation would grow up with PCs and use them in business

24. More Pictures . . .updating the Apple—these machines have a larger monitor, and check out the disk drives! Screens were black with white lettering! Courtesy of the Smithsonian’s Museum of American History in Washington, D. C. the Apple //e—this machine ran quicker and used AppleWorks—the forerunner to the Microsoft Office Package. Black Screen with GREEN lettering! Courtesy of the Smithsonian’s Museum of American History in Washington, D. C.

25. Still impacts us today…

26. Bill Gates • Bill Gates began programming when he was 13 years old founded Microsoft in 1975 with his childhood friend, Paul Allen

27. Bill Gates (Cont’d) • Went to Harvard • Dropped out his Junior year • Vision that computers would be a valuable BUSINESS tool • Easier to work with compared to Jobs

28. ETHICS • “Old fashioned” morals and values still apply • Document your sources • Do not use the computer to take or steal or use information without express permission

29. Basic Computer Sense • SAVE YOUR WORK OFTEN!! • Back up your files and keep them in a separate location • Use Antivirus software • No food or drink allowed in computer lab or near computers

30. There are Four Font Types Serif  fonts with extra curves; used for titles; example Bakersville Old Face San Serif no extra curves added to letters; used for the body of articles or papers; example Arial Script Cursive; used for formal invitations; example Lucida Handwriting Symbolpictures or some sort of symbol;used for custome bullets example; Wingding \DGKBUHkigh