What They Are and How They Are Used

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

Copyright © Texas Education Agency, 2013. All rights reservd. 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 Copyright © Texas Education Agency, 2013. All rights reservd. 2

Copyright © Texas Education Agency, 2013. All rights reserved. Peripheral Devices II. Peripheral devices can be used for Input – Used to receive data Output – Used to send data Storage – Used to store data Copyright © Texas Education Agency, 2013. All rights reserved. 3

Copyright © Texas Education Agency, 2013. All rights reserved. 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) Copyright © Texas Education Agency, 2013. All rights reserved. 4

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

Copyright © Texas Education Agency, 2013. All rights reserved. Peripheral Devices Common External Devices A. Input – Keyboard, Mouse B. Output – Monitor, Printer, CNC C. Storage – Hard drive, DVD+RW Copyright © Texas Education Agency, 2013. All rights reserved. 6

Copyright © Texas Education Agency, 2013. All rights reserved. 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 Copyright © Texas Education Agency, 2013. All rights reserved. 7

Copyright © Texas Education Agency, 2013. All rights reserved. Peripheral Devices VII. Types of Peripheral Uses: Business – A commercial enterprise or establishment Price scanners Office machines Credit card readers Security systems Others? Copyright © Texas Education Agency, 2013. All rights reserved. 8

Copyright © Texas Education Agency, 2013. All rights reserved. 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? Copyright © Texas Education Agency, 2013. All rights reserved. 9

Copyright © Texas Education Agency, 2013. All rights reserved. Peripheral Devices 2. Law Enforcement a. Bomb/explosives handlers (robots) b. Others? 3. Military a. Computer-controlled surveillance aircraft Copyright © Texas Education Agency, 2013. All rights reserved. 10

Copyright © Texas Education Agency, 2013. All rights reserved. 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? Copyright © Texas Education Agency, 2013. All rights reserved. 11

Copyright © Texas Education Agency, 2013. All rights reserved. Peripheral Devices Personal 1. Home computer 2. Security systems 3. Utility control Copyright © Texas Education Agency, 2013. All rights reserved. 12

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)?