Hi I have a somewhat basic question, but I wanted to know how different data types affects my program. I modified the basic Arduino 'Blink' sketch, to what I think is rather optimizing it, but I'm not sure my logic behind it is correct. Here is the code I made: /*This code will turn pin 13 into a…

Yes, a byte requires 8 bits of storage. You may not see that savings in the program memory, because changeable data are stored in RAM. Yes, on Arduino (but not on many other computers) an int is by default 16 bits (2 bytes).

Also, a byte is an unsigned data type, so your code comment is not correct. The range is 0 - 255.

When you use a const byte like that, I think the compiler directly writes the number into the code wherever it might be needed, meaning that the byte isn't "stored" anywhere at all.

Many (most?) compilers operate on even byte boundaries. So, it is likely that the number of bytes available that you are seeing will always be an even number.

Data storage: bytes vs. int

Projects Programming

Topic		Replies	Views
Byte vs Int Programming	5	34968	August 23, 2020
No space savings when using uint8_t ? Programming	25	619	January 19, 2025
Pin declaration byte/int Programming	6	979	November 14, 2022
Program memory usage: int vs word vs byte vs uint16_t Programming	10	236	March 5, 2025
byte Programming	42	4153	December 2, 2019

Data storage: bytes vs. int

Related topics