1. Microsoft Office 2007 – Illustrated Introductory, Windows Vista Edition Understanding Essential Computer Concepts

2. 2 Microsoft Office 2007-Illustrated Introductory, Windows Vista Edition Examining Output Devices Factors that influence a monitor’s quality are: Screen SizeScreen Size ResolutionResolution Dot PitchDot Pitch

3. 3 Microsoft Office 2007-Illustrated Introductory, Windows Vista Edition Examining Output Devices Types of printers LaserLaser Dot MatrixDot Matrix InkjetInkjet Inkjetprinter Inkjet printer

4. 4 Microsoft Office 2007-Illustrated Introductory, Windows Vista Edition Investigating Data Processing A computer file is a named collection of stored data. An executable file contains the instructions that tell a computer how to perform a specific task; for instance, the files that are used while the computer starts are executable. A data file is created by a user, usually with software.

5. 5 Microsoft Office 2007-Illustrated Introductory, Windows Vista Edition Investigating Data Processing Computers interpret every signal as “on” or “off.”Computers interpret every signal as “on” or “off.” 1 (“on”) and 0 (“off”) are referred to as bits.1 (“on”) and 0 (“off”) are referred to as bits. Eight bits is a byte. Each byte represents a unique character.Eight bits is a byte. Each byte represents a unique character.

6. 6 Microsoft Office 2007-Illustrated Introductory, Windows Vista Edition Investigating Data Processing Kilobyte (KB) = one thousand bytesKilobyte (KB) = one thousand bytes Megabyte (MB) = one million bytesMegabyte (MB) = one million bytes Gigabyte (GB) = one billion bytesGigabyte (GB) = one billion bytes Terabyte (TB) = one trillion bytesTerabyte (TB) = one trillion bytes

7. 7 Microsoft Office 2007-Illustrated Introductory, Windows Vista Edition Investigating Data Processing Each ASCII number represents an English character Computers that run the Windows operating system use the set of Extended ASCII definitions defined by the American National Standards Institute (ANSI). ANSI standard sample ASCII code

8. 8 Microsoft Office 2007-Illustrated Introductory, Windows Vista Edition Understanding Memory Computer memory is a set of storage locations on the motherboard.Computer memory is a set of storage locations on the motherboard. There are five types of memory:There are five types of memory: Random access memory (RAM)Random access memory (RAM) Cache memoryCache memory Virtual memoryVirtual memory Read-only memoryRead-only memory Complementary metal oxide semiconductor memory (CMOS)Complementary metal oxide semiconductor memory (CMOS)

9. 9 Microsoft Office 2007-Illustrated Introductory, Windows Vista Edition Understanding Memory RAMRAM Temporary memory that is constantly changing while the computer is on.Temporary memory that is constantly changing while the computer is on. Also called volatile memory and temporary memory.Also called volatile memory and temporary memory. Cache memoryCache memory Special high-speed memory chip on the motherboard or CPUSpecial high-speed memory chip on the motherboard or CPU Stores frequently and recently accessed data and commands.Stores frequently and recently accessed data and commands.

10. 10 Microsoft Office 2007-Illustrated Introductory, Windows Vista Edition Understanding Memory Virtual memory is extra memory that simulates RAM if more is needed.Virtual memory is extra memory that simulates RAM if more is needed. Read-only memory (ROM) is the permanent storage location for a set of instructions the computer uses.Read-only memory (ROM) is the permanent storage location for a set of instructions the computer uses. CMOS memory is semi-permanent information about where essential software is stored.CMOS memory is semi-permanent information about where essential software is stored.