Computer Basics - first post
Computer hardware and software is divided into:
A : Hardware
Computer hardware consists of five major components :
1. Controller: The computer controller is the nerve center of the computer, the command of the whole machine in automatic coordination of the various components
2. The operator: mathematical and logical operations, the controller together with the CPU composition
3. Memory: accessing data into memory and external memory.
Memory: Based on the electric, fast, when not permanently stored (power data loss)
Hard disk: based on magnetic, far slower than the speed of memory, can be stored permanently
4. Input devices: keyboard, mouse, camera
The output devices: a display screen, a printer
Run the program
three hardware: CPU, memory, hard drives
Three hardware and operating procedures relating to: CPU, memory, hard drives
CPU: Fetch Unit --------- "decode unit -----------" execution unit
Register: temporary storage of the next instruction to be executed soon
Cache area: instructions for temporary storage of frequently called
RAM: i.e., memory (main memory) volatile ---
ROM: read only memory, the BIOS program stored in the nonvolatile Board ---
II: Software
1. Software is between the user and hardware interfaces interface.
2. The users are mainly communicate via computer software.
3. Software is an important basis for computer system design.
4. In order to facilitate the user, in order to make the computer system has a higher overall utility in the design of a computer system, must take into consideration a combination of software and hardware, and the requirements of users and software requirements.