The data type that occupies the least memory in VB is Boolean, which can only store the true and false values of 0 and 1.

Another data type that takes up less memory is "Byte", which can store 0-255***256 integers;

If you want to choose a data type that can store Integer value 300 and occupy less memory, you can choose "integer", whose data storage range is-32,768 to 32,767, which is the data type that VB can store integer value 300 and occupy the least memory.