What is the difference between Arduino s Serial write and Serial print

If you send 97, it is actually 9 ASCII (00111001) and 7 ASCII (00110111).

The byte sent is a number from 0 to 255, if you send 97, it is actually the binary (01100001) of 97, which corresponds to the "a" in the ASCII table".

According to the explanation of the reference on the official website of arduino, serialprint() is print data to the serial port as human-reading asc ii text ,serialwrite() is to write binary data to the serial port, one is converted to text output, and the other is data output.

If you send 97, it is actually 9 ASCII (00111001) and 7 ASCII (00110111).

The byte sent is a number from 0 to 255, if you send 97, it is actually the binary (01100001) of 97, which corresponds to the "a" in the ASCII table".

ln is a line break, and no ln is no line break.

I've already had the type of answer here.

And then you're asking from a ** point of view, obviously the stringbuffer consumes much less of the inner virtual storage, if you use an example similar to the one I gave in the article above:

string s="hello baidu";

s=new string("hello baidu");

s="!There will be two spaces in memory that are not pointed, and will not be **, because neither of them is nullOnly when the **ends** will it be **.

In our small program, such overhead is negligible, but in large projects, a large amount of overhead will have a great impact on the speed of running poorly.

StringBuffer, on the other hand, is safe to use as an application because it supports modifying the value of a string.

If it helps you, please remember to answer for satisfaction, thank you! Have a great day!

vaela

Write is considered to be the bottom layer, and print can be formatted.

When it comes to outputting characters or strings, there is no difference.

When outputting a numeric value, write outputs the data itself directly, while print converts it into displayable ASCII characters.

For strings, there is a difference for ints and the like.