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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Peripheral Devices
IV. Common Internal Devices
A. Input – Microphone
B. Output – Speakers
C. Storage – Hard drive, DVD+RW
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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
Picture from
U.S. Department of Defense
U.S. Army Photograph
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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?
Picture from the National Aeronautics and Space Administration (NASA)
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Peripheral Devices
Personal
1. Home computer
2. Security systems
3. Utility control
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