Hardware composition: input unit, output unit, central processing Unit, memory Unit South Bridge: I/O operation North Bridge: the unit of CPU operation 0/1 is known as bit (bit) bit is the smallest unit that can be recognized in the computer. bytes are the smallest storage unit in the computer. 8bit=1byte (bytes) =255=2^8-11024byte=1kbyte=1kb1024kbyte=1mbyte=1mb 1 million bytes 1024mb=1gb=10 billion bytes 1024gb=1tb=1 trillion bytes hard disk is external storage. Mechanical hard disk Features: 1. Data power Loss 2. Repeatable Read and write 3. Slow (relative to memory) SSD: expensive, fast sequential read speed: 500mb/s, continuous write Speed: 300mb/s Memory: 1. Loss of power data 2. Read and write speed very fast CPU: frequency: 4GHz Operation 4 billion times per second clock frequency (how many times a second can be shaken) each time the clock cycle theoretically allows the CPU to execute an instruction 1000hz=1khz1000khz=1mhz=100 million hz1000mhz=1ghz=10 Hz operation 1 billion times per second Instruction set: Complex instruction set, simple instruction set FSB: Speed multiplier for data transfer between CPU and external components: a multiple CPU internal CPU used to speed up operating performance = FSB * Octave
Python Road "second article" Computer composition
