CS Common Flashcards
How is sound stored
The amplitude is sampled and turned into a bit
Equation for size of audio file
Bit depth x Sample Rate x Number of channels x Duration
What is a character set
List of characters with assigned unique code
What does each shape do in a flow chart
Pill shape is start and end
Rectangle is process
Diamond is decision
Parallelogram is input output
Definition of a network protocol
A set rule for different devices to communicat over a netwrok
Factors effecting network performance
Bandwidth
Number of users
Number of transmission errors
Transmission medium (wired, fibber optic)
Latency
What are the levels of cache
Level 1 quickest read and write but smallest capacity
Level 2 slower but more capacity than lvl 1
Level 3 slowest but has the most capacity
Functions of the CU
Controls data flow in CPU
Decodes data
Controls data flow between CPU and other components
Function of ALU
Arithmetic and Logic operations
Purpose of registers
Very small and fast memory that stores temporary data for the CPU to access and carry out he FDE cycle
Function of Bios
checks hardware connected to the computer
Self checks the hard ware
Loads OS
OS functions
File management
UI
Allows multitasking by controlling CPU resources
Allows peripherals to communicate
Describe encryption
Data is SCRAMBLED using a key
