Let us look inside a computer. It can have a mouse. We can see how it works.
It is built from a few parts. Two of them are a CPU and memory.
A program is a list of instructions. A programmer writes the list, and the CPU follows it. The CPU can add two numbers.
A bit is the smallest piece of computer storage. It holds a 0 or a 1.
A byte is a group of 8 bits. It can store one letter. It can be A or x.
A picture is stored with only 0s and 1s. A screen picture is made of tiny squares. They are called pixels.
RAM is fast memory. It holds what the computer is using right now. RAM loses what it holds when the power goes off.
Files that are saved are still there when the power goes off. A hard drive stores bits on a spinning disk.
Words to know
- byte: 8 bits
- pixels: tiny squares
- RAM: fast memory
