Can u explain bytes,megabytes(MB),gegabutes(GB)?

A byte is 8 bits of information (each bit can be either 1 or 0). A kilobyte means one thousand bytes but it is actually 1024 bytes (because computers work in binary numbers and 1024 is 2 to the power of 10). 1 Megabyte = 1024 kB 1 Gigabyte = 1024 MB 1 Terabyte = 1024 GB so 1 Gigabyte = 2^30 bytes = 1,073,741,824 bytes (approximately 1 thousand million bytes).