1. What They Are and How They Are Used
Peripheral Devices
What They Are and How They Are Used .

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Peripheral Devices
What is a Peripheral Device?
Any item connected to a computer but is secondary in relation to the CPU.
Internal – Operates inside the case
External – Operates outside the case
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Peripheral Devices
II. Peripheral devices can be used for
Input – Used to receive data
Output – Used to send data
Storage – Used to store data
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Peripheral Devices
III. Types of Signals:
Analog – Stream of data that we see and hear
Digital – Estimates analog data using only ones and zeros; on or off (aka the Binary System)
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5. Peripheral Devices IV. Common Internal Devices A. Input – Microphone
IV. Common Internal Devices
A. Input – Microphone
B. Output – Speakers
C. Storage – Hard drive, DVD+RW 5

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Peripheral Devices
Common External Devices
A. Input – Keyboard, Mouse
B. Output – Monitor, Printer, CNC
C. Storage – Hard drive, DVD+RW
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Peripheral Devices
 VI. Specialized Peripheral Devices:
A. ISDN – Integrated Services Digital Network: Allows computers to communicate through telephone wires (Analog ↔ Digital)
B. CNC/NC – Computer Numeric Control: Computer programs control and monitor machines’operations
Robots
Mills/looms
CNC machining
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Peripheral Devices
 VII. Types of Peripheral Uses:
Business – A commercial enterprise or establishment
Price scanners
Office machines
Credit card readers
Security systems
Others?
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Peripheral Devices
B. Industry – The sector of an economy made up of manufacturing, trade and services
Manufacturing
a. CNC machining
b. Automated or robotic welding
c. Computer controlled warehouses
d. Others?
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Peripheral Devices
2. Law Enforcement
a. Bomb/explosives handlers (robots)
b. Others?
3. Military
a. Computer-controlled surveillance aircraft
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Peripheral Devices
Science
Space – Robots travel on the surfaces of moons or planets, take pictures, collect samples, etc.
Medical – Computer-controlled robotic surgery, digital X-ray screens
Others?
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Peripheral Devices
Personal
1. Home computer
2. Security systems
3. Utility control
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13. Daily Assignment
Take out a sheet of paper or open a new word document and answer the following questions in complete sentences based on your opinions.
What do you think is the most interesting peripheral device?
What do you think is the most essential peripheral device?
What do you think is the least interesting peripheral device?
What do you think is the least essential peripheral device?
Which peripheral devices are mostly used by (Name 3 for each)
 The business sector?  Industry?  The private sector (individuals)?
6. Which peripheral devices are used by all 3 sectors (Name 3)?
Which peripheral devices do you think that a computer could run without (Name 3)?
Which peripheral devices can be removed and substituted with another device (Name 3)?