IBM PC DOS

And I wrote, when Microsoft came out with MS-DOS, it came out that that was its first operating system on your PC.

Everybody ran MS-DOS, or if it was an IBM PC, it was called PC-DOS.

And it had an interface to talk to a printer, talk to a lot of different devices.

But the interface that it had to talk over a serial port that allows you to connect tablets and allowed you to connect certain types of printers, et cetera, was terrible.

That's...

Yeah, that's somewhere in between the, uh, the, uh, IBM DOS and Apple II, somewhere in that range.

But I'm intrigued.

Um-

And I wrote, when Microsoft came out with MS-DOS, it came out that that was its first operating system on your PC.

Everybody ran MS-DOS, or if it was an IBM PC, it was called PC-DOS.

And it had an interface to talk to a printer, talk to a lot of different devices.

But the interface that it had to talk over a serial port that allows you to connect tablets and allowed you to connect certain types of printers, et cetera, was terrible.