Old computer, old system

My old computer IBM
Monitor in 256 (two hundred fifty-six) cores
Low quality of image
My old computer, my old system

My old system MS-DOS
Text in green
Text in green
System in command line

MS-DOS
The MicroSoft - Disc Operating System
I writing my commands
Operating in my files
Managing my floppy disks
Writing commands cd
Swaping units
A, B, C

Only 3 MB (tree megabytes) of RAM memory
Only 20 MB (twenty megabytes) of memory in the HD
Internet? Only cable, no Wi-Fi
Graphics? Only 16-bits (sixteen)

But what has turned the MS-DOS?
The Windows
One system full of bugs!
Bugs of boot, security, software loading, graphics!

MS-DOS one good system
Has turned this...

Old computer IBM
Old system MS-DOS
Command line!