Lesson 1-11 Flashcards
Input
The directions you give a computer to carry out certain functions, called outputs
Output
The outcome of an input, the action the computer takes
Storage
The amount of data a computer can hold
Processing
The manipulation of data done by a computer
What is a computer?
A device that takes in and manipulates information
CPU
Central Processing Unit, the brain of a computer
GPU
Graphics Processing Unit, renders images on a display
Hard Drive
Long term computer storage
RAM
Temporary computer storage
Motherboard
Allows other parts of a computer to communicate
Hardware
Physical parts of a computer
Software
Programs and operating systems of a computer(not physical)
Bit
Smallest unit of data computers can process, 1 or 0
Byte
Group of 8 bits
What is 23 in binary form?
10111
What is 10010110 in decimal form?
150
Overflow
When a program receives a number or variable that doesn’t fit
Rounding error
An error from trying to represent a number that is to precise, it is rounded by the computer
What is ASCII?
A key that computers use to represent certain characters, such as the alphabet
What is A in ASCII
97
Abstraction
When all but the relevant data about something is hidden in order to compress something and increase efficiency
Pixel
The smallest unit that make up digital displays
Sampling frequency
The level of detail used when making a digital sample, determined by the amount of pixels used in the sample
What is the correct order of Abstraction for how computers represent images?
binary -> RGB -> pixel -> sampled image -> digital image
Analog image
An image represented by continuous variation of tone, like a photograph
Digital image
The representation of an analog image using pixels
RLE
Form of Lossless compression where runs of data are stored as a single data value
Lossless compression
Compression of data where no information is lost
Lossy compression
Compression of data where some date is lost, but it’s more efficient to send and takes less storage
Intellectual property
Work or an invention that is the product of creativity
Copyright
The legal right to ownership and control over a certain creative work
Creative commons
An organization to create free licenses for creators to make their work available to the public
Overflow analogy
If a box is meant to hold 10 cans but you try to fit 12, the left over 2 overflow the box
