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Download Introduction to Computers
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The Five Parts of an Information System 1 The Five Parts of an Information System 2 The Five Parts of an Information System 3 The Five Parts of an Information System 4 The Five Parts of an Information System 5 Software • Application Software - helping endusers perform general purpose tasks • System software - enables application software to interact with the computer 6 Software • Application Software - helps end-users perform general purpose tasks • System software - enables application software to interact with the computer 7 Software 8 Software End User An end user is anyone who uses a microcomputer or has access to larger computers - that’s nearly everyone in today’s workforce. They enter commands and typically interact with application programs. 9 Software Application Software Programs to create, organize, analyze, present and communicate information. For example, Excel is a spreadsheet application program that is used to analyze data. 10 Software System Software “Background” programs that coordinate the application software requests with computer hardware. Windows 2000 is a widely-used system program. 11 Software Computer Hardware Devices that accept input, process data, store information, produce output and send communications. For example, a disk drive, keyboard, printer and modem are different types of computer hardware. 12 Application Software • Packaged - “off the shelf”, pre-written programs ( General purpose) • Custom - written for an organization’s specific purpose (Special purpose) 13 Application Software - Basic Tools • Word processors 14 Application Software - Basic Tools • Word processors • Spreadsheets 15 Application Software - Basic Tools • Word processors • Spreadsheets • Database managers • Graphics 16 System Software • “Background software”, manages the computer’s internal resources 17 System Software • Operating system – Interface between application software (and user) and the computer – Runs programs – Processes data – Stores information – Frees the user from complicated, technical tasks 18 Examples of Microcomputer Operating System Software • DOS - original standard for IBM compatibles • Windows - a graphical operating environment • Windows 2000, Windows 98 19 Examples of Microcomputer Operating System Software • Windows NT - for powerful workstations & networks • OS/2 - competitor to Windows 2000 • Macintosh Operating System • Unix - originally for minicomputers, now used on microcomputers and Internet servers 20
