All language subtitles for 6. What happens under the hood of the computer

In this lecture, we will learn about what happens under the hood of the computer when a program is

run.

There is an area of memory inside of the computer called Random Access Memory, or RAM.

All of the different programs on your computer have their own space in the room.

As I mentioned in a previous lecture, computers only understand binary code made up entirely of ones

and zeros.

The computer is really just a collection of transistors or on off switches, with one being on and zero

being off.

The code that we write has to be converted multiple times before the computer can understand it.

When we write a program in C Sharp, for example, the computer does several things.

First, it translates the C sharp source code to assembly language.

After that, it takes the assembly language and convert it to machine language.

Then it takes the machine language and converts that to binary code ones and zeros.

At this point, the instructions of the algorithm are in a form that the computer can understand to

run a program.

There is a cycle of four steps.

The computer fetches the next instruction from the RAM.

Then it decodes what it has to do.

It looks at the instruction and sees exactly what it is being asked to do.

Then the instruction is executed, meaning that the task is carried out.

Finally, the result will be stored.

The process then repeats after the store step, the next instruction is fetched and the cycle continues.

That is a basic overview of what happens under the hood of the computer.

When we run a program in the next lecture, we will learn about the heap in the stack and the role that

they play in computer programming.