how much is 4 bytes?or what does it literally mean?

Question

does this mean the space the digits take or anything else?

Answer 1

Extending Karl's answer:
A bit is one digit in binary. So 0 or 1.
And example of a byte is: 01000010 (there are 8 bits in a byte)

Answer 2

4 bytes you mean? 4 bytes data type are 4*8 = 32 bits long, meaning that they require 32 bits in memory for encoding.

Answer 3

@Aatish Yep.

Answer 4

okay got it... it means 32 dgits (bits) in 4 bytes?