Memory

most people know that a computer has memory. But what does that relly mean? You often hear techines toss around numbers like "60 GB hard drive. "Okay, that sounds impressive, but what does it tell you? This lesson breaks memory into measurable units.
The first thing you need to know is that, at its most basic level, a computer only understands the concept of "on and Off." On is represented by the number one (1); off is represented by the number zero (0). everything that a computer does is based on this combination of ones and zeros, which is known as the binary system. these ones and zeros are digits, known as bits, which are the smallest memory unit. The term bit is short.