> For the complete documentation index, see [llms.txt](https://cpb.gitbook.io/book/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cpb.gitbook.io/book/languages/assembly/what_it_solves.md).

# What it solves

Consider this instruction, where we have to add the two numbers 1 and 2.

## Assembly

```
mov edx, 1
mov eax, 2
add eax, edx
```

## Hexadecimal

```
ba01000000b80200000001d0
```

## More readable hexadecimal

```
0:  ba 01 00 00 00   mov edx,0x1
5:  b8 02 00 00 00   mov eax,0x2
a:  01 d0            add eax,edx
```

## Binary code with a mistake. Happy debugging

```
000000000001001010000000000100110000000000100011000000000001001100000000010100101000001101100011
```

The purpose of an assembly language can easily be seen with the help of the above example. Assembly language with the help of its syntax makes it easier to code and not worry about trivial tasks such as opcodes, address calculations, etc. Mistakes if any can easily identified in assembly rather than in binary. Imagine finding such mistakes in a pool of just a numbers!