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CODEHS FUNDAMENTALS OF COMPUTING UNIT 2
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CODEHS FUNDAMENTALS OF COMPUTING UNIT 2
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CODEHS FUNDAMENTALS OF COMPUTING UNIT 2Hardware - Answers- physical components of a computer
Software - Answers- programs that run on the computer
Output devices - Answers- how your computer tells you things
input devices - Answers- how you give information to your computer
Networks - Answers- sends data to a central location, which then passes on the
information
local area networks (LAN) - Answers- connects computers close to each other
wide area networks (WAN) - Answers- connects computers far away from each other
binary - Answers- A system in which information can be expressed by combinations of
the digits 0 and 1
Computer - Answers- a computing machine, performs calculations according to precise
instructions, does the operations incredibly fast
processing speed - Answers- the rate at which can carry out operations
Moore's law - Answers- states that the processing speed of a computer should double
every two years as we get better and better at making these processors
Program - Answers- a set of instructions written by a human that is given to a computer
to tell it what to do
2600 BC - Answers- Chinese abacus
1910 - Answers- Henry Babbage constructs part of Charles Babbage's analytic engine.
Could perform basic mathematical calculations
1936 - Answers- Konrad Zuse's Z1. First binary digital computer
1936 #2 - Answers- Alan turings turing machine theory. first universal computing
machine. Theory that computers could write and read symbols on a sheet of paper.
Helped determine limitations of computer
1946 - Answers- ENIAC. first electronic general purpose computer. all women
programmers
, 1950 - Answers- UNIVAC. first modern computer. took up an entire room
1975 - Answers- first portable computer from IBM. weighed 55 pounds with a 5 inch
display and 64KB of memory
In what year was the word "computer" first used and what did it describe? - Answers-
1613, a person who performed calculations
First uses of computers - Answers- To keep counts: Livestock
marketplaces: Summing money
Calculate astronomical positions: Navigation, calendars
Uses that drove development- - Answers- Solve math problems: Solve them faster,
Solve more complex problems
Military uses: Decode encrypted messages during wars, Compute proper trajectory of
missiles
Business uses: Automate production of goods
storage devices - Answers- how your computer remembers information
primary storage - Answers- memory the computer uses to perform its normal activity
secondary storage definition - Answers- extra memory used for persistent storage
network devices - Answers- how your computer communicates with other computers
router definition - Answers- center of the network
ethernet port - Answers- one way to physically connect to a network
wireless internet card (WIFI card) - Answers- allows a computer to connect to the
internet
Modern computers- we immediately think of these three examples - Answers- laptops
desktops
tablets
these are also examples of modern computers - Answers- Phones
Smart watches
Toys
Cars
Appliances
What is the difference between laptops/desktops/tablets and
phones/toys/cars/appliances/smart watches? - Answers- programming
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