A complete computer system has the following three parts
1: Application
2: operating system
3: computer hardware
Five components of a computer
1, the controller: a computer control system of the human brain =
2, the operator: in computing system
It is equal to the sum of both cpu
Controller plus operator
3, the reservoir: a computer storage system
Computer storage memory plus external memory system is divided into
Memory: This simply means that, short-term memory, but the store is relatively small, but fast
External memory: This simply means that the larger memory space, but the reaction speed is slow compared to memory, but like SSDs, they would have been stored
4 output devices: computer display screen, audio, copier, etc.
5 Input devices: keyboard, mouse, touch screen, etc.
The computer's three core organizations:
cpu
RAM
hard disk
cpu working process
Read commands from memory and then parse the command can be translated into your own application procedure, and then issued to the hard disk control execution
Action command is divided into: Simple Instruction Set
: Complex instruction set