Binary Flashcards
Learn definitions (18 cards)
What is Binary?
Binary is a number system that uses 2 digits (0 & 1)
What is a Bit?
A bit is a single 0 or 1.
What is a Nibble?
A nibble is 4 bits.
What is a Byte?
A byte is 8 bits.
What is a pixel?
A pixel is a shortened term for picture element. It is a tiny part of a digital picture or screen. Each pixel has a colour and together they make a picture. Each pixel contains 3 tiny lights, 1 red, 1 green and 1 blue (AKA subpixels).
What is Resolution?
Resolution is the number of pixels in an image.
What is Colour Depth?
Colour depth is the number of colours in an image.
What is Bit depth?
Bit depth is the number of bits needed to represent a colour or pixel in an image.
What is a Bitmap?
A bitmap is a representation of an image which uses binary to represent each colour of each pixel. Together the pixels make the bitmap image. They are used in graphics and photos.
What are some common bitmap formats?
Common bitmap image formats: BMP, PNG, JPG, GIF.
What is pixelation?
Pixelation happens when an image is zoomed in too much. The individual pixels become visible, making the image look blocky. Low-resolution images pixelate more quickly.
What happens when there are more pixels?
More pixels equals to better quality but bigger file size.
What happens when there is more colour depth?
More colour depth equals to more realistic images but needs more storage.
What happens when bitmap images are resized?
Bitmap images are great for photos, but they lose quality when resized!
What does hardware need?
Hardware needs electricity which has 2 states On (1) and Off (2).
What does software need?
Software uses binary for all data processing.
What can computers only process and what do have to do to make that happen?
Computers can only process digital data meaning everything must be converted to binary before being processed.
Why do computers use binary?
Because it is the simplest way to represent 2 states (0 & 1). It makes computing fast, efficient and reliable.
