CHAPTER 3 - COMPUTERS AND MOBILE DEVICES
- A supercomputer is the fastest, most powerful computer — and the most expensive
Server vs Supercomputer
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SERVER
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SUPERCOMPUTER
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Serves bits and bytes of data that enter and leave the server
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Regular hardware combined in enormous proportions
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Web servers-processing requests from surfers and sending them back data
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Contain so many processors
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Web browsers - assemble that data to generate Web pages
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Predict the weather, build airplanes, model the brain and simulate the way the planet works
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Server send files in a network
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Sequoia Blue Gene/Q supercomputer processing 504 billion events per second(2013)
≈1 million desktop computers
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🌥 Cloud Computing 🌥
Refers
to an environment of servers that house and provide access to
resources users
access through the Internet
🔌Ports and Connections
🔹 Port ⇢ point at which a peripheral device
attaches
to or communicates with a computer or mobile device so that the peripheral device
can send
data to or receive information from the computer or mobile device
🔹 Connector ⇢ joins
a cable to a port
🔹 Wireless Communication Technologies ⇢ Bluetooth, Wi-Fi, NFC
➹ Protecting Hardware
- Surge Protector
- Uninterruptible power supply (UPS)
😷 Health Concerns of Using Technology
•A
repetitive strain injury (RSI) is an injury or disorder of the
muscles, nerves, tendons,
ligaments, and joints
•Computer vision syndrome (CVS)
is a technology-related
health condition
that affects eyesight
•Ergonomics
is an
applied science devoted to incorporating comfort, efficiency,
and safety
into the design of items in the workplace
•Technology addiction occurs
when the technology consumes someone’s entire social life
