bits and bytes

• 比特

比特,英文bit,简记为b,是计算机存储的最小单位,Computer storage is stored in bits,其中0、1Each bit is a bit.

• 字节

字节,英文Byte,简记为B,It is a unit of data measurement by computer.

• Data type and bytes

#include <stdio.h>
#include <stdlib.h>

int main(){
    
	printf("%d\n", sizeof(char));			//1
	printf("%d\n", sizeof(short int));		//2
	printf("%d\n", sizeof(int));			//4
	printf("%d\n", sizeof(unsigned int));	//4
	printf("%d\n", sizeof(float));			//4
	printf("%d\n", sizeof(double));			//8
	printf("%d\n", sizeof(long));			//4
	printf("%d\n", sizeof(long long));		//8
	printf("%d\n", sizeof(unsigned long));	//4
	printf("%d\n", sizeof(char *));			//8
	return 0; 
}

How to tell if you are talking about bytes or bits？

• 与数据相关的,Such as storage units and network speed units,不管是 B 还是 b,All represent bytesByte.

如硬盘10M,说的就是10Storage size in megabytes.

As we usually say download speed,That is internet speed,is the number of bytes downloaded per second.For example, the internet speed is5KB,This means that the data received per second is five kilobytes.

• 与硬件相关的,Such as the unit of network bandwidth,不管是B还是b,All represent bitsbit .

如2M宽带,Means average per second is acceptable 2Mb 的数据,That is about two million bits of data.