computer science
- Created by: luke cookson 2001
- Created on: 13-12-16 12:19
View mindmap
- Computer science
- Binary
- 8 bits = byte
- 1024 =1kb
- 1024 kilobytes = 1mb
- 1024 megabytes = 1tb
- CD
- DVD
- RAM
- BLUE RAY
- USB
- HARD DRIVE
- Denary
- 128
- 64
- 32
- 16
- 8
- 4
- 2
- 1
- 2
- 4
- 8
- 16
- 32
- 64
- Binary
- 0
- 0
- 1
- 0
- 0
- 1
- 0
- 1
- 00100101= 115
- 1
- 0
- 1
- 0
- 0
- 1
- 0
- 0
- 128
- hexadecimal
- 10=A
- 11=B
- 12=C
- 13=D
- 14=E
- 15=F
- 14=E
- 13=D
- 12=C
- 1|A
- 16|1
- =26
- 16|1
- B2=178
- ASCII
- American Standard Code for Information Interchange
- extended ASCII contains 256 characters
- sound
- analogue sound is pure unaltered sound e.g a singer without a mic.
- digital sound is computerised sound that is often altered to reduce the file size, therefore it is not pure.
- sampling is a simple recording of snippets at set intervals.
- metadata tells the computer what type of file it is so that the computer can use the file correctly.
- clipping is when the computer clips out the sounds that the human cant hear to reduce the file size of the sound.
- representing images
- colour depth makes the image look more realistic but increases the file size of the image.
- metadata tells the computer what type of file it is so that the computer can use the file correctly.
- high resolution makes an image smaller with the same quality or larger with higher quality, it increases the file size.
- a pixel is the smallest addressable point of an image, images displayed on a computer or made of lots of pixels.
- a bitmap is an image representation that corresponds to bits of information.
- Binary
Comments
Report