The document discusses the key components of an information system and computers. It defines the five parts of an information system as people, procedures, software, hardware, and data. It distinguishes between the different types of system software and application software, and describes the four main types of computers and microcomputers. The document also discusses computer hardware components like the system unit, input/output devices, storage, and communication devices. It defines data and the different types of files used to store it.

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2. 1-2
Competencies (Page 1 of 2)
• Explain the five parts of an information system:
people, procedures, software, hardware, and data.
• Distinguish between system software and
application software.
• Discuss the three kinds of system software
programs.
• Distinguish between basic and specialized
application software.
• Identify the four types of computers and the four
type of microcomputers.

3. Competencies (Page 2 of 2)
• Describe the different types of computer
hardware including the system unit, input, output,
storage, and communication devices.
• Define data and describe document, worksheet,
database, and presentation files.
• Explain computer connectivity, the wireless
revolution, and the Internet.
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4. 1-4
Introduction
• Computer competency refers to acquiring computer-
related skills
• Microcomputers are common tools in all areas of life
• New forms of learning have developed
• New ways to communicate, to find people with
similar interests, and to buy goods are available.

5. Five Parts of an Information
System
1. People
2. Procedures
3. Software
4. Hardware
5. Data
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6. People
• Most important part of any system
• Contact is …
– Direct
– Indirect
• Computer uses
– Business & Entertainment
– Education & Medicine
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Software
• AKA Programs
• Two major kinds of software
– System Software
– Application Software

8. Hardware - Types of Computers
• Supercomputers: the most powerful;
special high-capacity computers used
in very large corporations
• Mainframe computers: are capable of
great processing speed and data
storage
• Minicomputers :known as mid
range computers are refrigerator
sized machines used in medium
sized companies or departments in
large companies
• Microcomputers:
least powerful but most widely used and fastest-growing type of
computers
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9. Microcomputer Types
• Desktop
• Notebook or laptop
• Tablet PC
• Handheld
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Microcomputer Hardware
• Four basic categories of equipment:
– System Unit
– Input/output
– Secondary Storage
– Communication

11. System Unit
• Two important components
– Microprocessor
– Memory
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• Systems unit-container houses most of the electronic components that make up a
computer system
• The microprocessor controls and manipulates data to produce information
• Memory holds data and program instructions for processing the data. It also holds the
processed information before it is output

12. Input/Output Devices
• Common input devices are the keyboard and the
mouse
• Common output devices are printers and monitors
Return
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Secondary Storage
Return
• Unlike memory, secondary storage
holds data and programs even if
electrical power is not available
• The most important types of secondary
media are Floppy, hard and optical
disks

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Communications
• Communication Devices provide microcomputers
with the ability to communicate with other computer
systems across the globe
• The modem is the most widely used communication
device
• Modems modify telephone communications into a
form that can be processed by a computer
• Modems also modify computer output into a form
that can be transmitted across standard telephone
lines

15. Data
• Raw, unprocessed facts
• Processed data becomes information
• Stored electronically in files
– Document files
– Worksheet files
– Database files
– Presentation files
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