1. What does a computer do? Accepts data through inputting Processes data
Stores data
Outputs data

2. Input Devices Mouse Keyboard Scanner Microphone Digital Camera
Voice Command
Touch Screen

3. Output Devices
Printer
Monitor
Speaker

4. Computers STORE Data in Bytes
One byte is 8 bits (a bit is an off/on switch or a zero or a one) a:
One byte holds one character, numeral, or symbol such as the letter z, the numeral 3, or the symbol *
Kilobyte KB is 1 thousand bytes
Megabyte 1 MB is 1 million bytes
Gigabyte GB is 1 billion bytes

5. Storage Devices Permanent Storage Devices
USB Storage Device 256 MB - 1 GB+ Removable
CD-R MB Removable
DVD-R GB Removable
Hard Drive 120 GB ++ Not removable
Temporary Storage (stores data while processing)
Random Access Memory - RAM

6. Saving your data at CCSF
Save on your USB storage device.
Use Save As the first time you are saving so that you can indicate WHERE you will store your file/data.
Save often
Remember, when you turn off your computer, everything in RAM is removed.
Back-up important files

7. Computers PROCESS data fast and accurately!
Central Processing Unit (CPU) (so called “brain” of the computer
Speed of computer is measured in Megahertz (MHz)
1 Megahertz is a million cycles per second (ours are 450 MHz)
Computers today often run at 3+ GHz Gigahertz (billion cycles per second)

8. Software/Programs – Instructions for the Computer
Operating System Software
Performs housekeeping tasks, saves and organizes files, connects all the peripherals
Microsoft Windows XP (used by CCSF Business Department)
Applications Software/Programs
Performs specific tasks
Microsoft Office 2007 is an integrated software package containing various individual programs that do different tasks – Word, Excel, Access, PowerPoint.

9. Four Major Programs in Microsoft Office 2007
Category
Program
Extension
Common Output
Word Processing
Word
.docx
Letters, reports
Spreadsheets
Excel
.xlsx
Budgets, financial projections
Database
Access
.accdb
Client lists, inventory
Presentations
PowerPoint
.pptx
Trainings, promotion, publicity

10. Using Control and Shift Keys in selecting files/folders and data
Press after you select the first one and keep holding until you select the last one
Selects files/folders and data that are next to each other (contiguous or adjacent)
Control Key
Press as you select each one
Selects non-contiguous (non-adjacent) files, folders, or data that are in random order

11. Using Move and Copy
When you move a file, folder or data, it is no longer in its original location
When you copy a file, folder, or data, it is both in its original location and in its new location.

12. The Ergonomics of Using Computers
Maintain good posture
Stand up and stretch often
Rest your eyes and mind
Take risks, relax, and have fun!