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AP Computer Science > Unit 1 > Flashcards

Unit 1 Flashcards

1
Q

Input

A

Initial message

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2
Q

Storage

A

storing the steps taken to complete a task to be used again

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3
Q

Processing

A

the steps taken to complete the task

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4
Q

Output

A

the final product

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5
Q

Computer

A

a machine that can complete tasks

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6
Q

Motherboard

A

Main circuit of the computer allows connection between different parts of the computer. (nervous system)

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7
Q

CPU

A

Central processing unit. Executes all commands. If it’s not working, nothing will operate. Measured in Hertz (brain)

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8
Q

Video Card

A

Graphics processing unit. Displays what you see and handles heavy tasks. Handles all visual data and measured in Hertz (eyes and muscle)

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9
Q

RAM

A

Random access memory.
“Short term memory”. Temporary space for the CPU to work. What’s needed to do the task at hand. Measured in Bytes (desk top in class)

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10
Q

Hard Drive

A

“Long term memory”. Storage for all software (files, apps, programs, operating systems) Measured in Bytes

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11
Q

Power Supply

A

“Energy” Supplies all parts of a computer with power

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12
Q

Network Card

A

Allows your computer to connect to the internet

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13
Q

Case

A

Hold everything together (skin)

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14
Q

Bit

A

binary digit

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15
Q

Byte

A

a group of bits, typically 8

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16
Q

2^n

A

decimal to binary equation

17
Q

Overflow

A

an error that occurs when a program recieves more information that it can handle

18
Q

Rounding Error

A

when a computer is not able to represent a number exactly, so it much round to get as close as it can

19
Q

ASCII

A

American Stardard Code for Information Interchange. the universal conversion from bits to letters, symbols, etc…

20
Q

Abstraction

A

retaining important information and throwing out everything else

21
Q

Pixel

A

unit of programmable color on a computer display

22
Q

Sampling Frequency

A

the amount of pixels present on a display that can be used

23
Q

analog image

A

a physical painting or drawing

24
Q

digital image

A

an image that has been downloaded and converted onto a device

25
Q

RLE

A

run length encoding. lossless data compression that finds repeated sounds or words and creates symbols to represent them, shortening the total message

26
Q

Lossless Compression

A

a version of compression where no data is lost and it is completely reversible

27
Q

Lossy Compression

A

a version of compression that loses some data, as unnoticeable as it may be, that cannot be reversed

28
Q

Intellectual Property

A

something you think up that you own

29
Q

Copyright

A

the legal right of a creator to decide what can done with their work

30
Q

Creative Commons

A

a non-profit organization that can be used to license your work that controls how it is distributed

AP Computer Science (1 decks)

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