The keyboard buffer size was something like sixteen keystrokes. This was bad news if you noticed your input wasn't working and you needed to press CTRL + whatev

The keyboard buffer size was something like sixteen keystrokes. This was bad news if you noticed your input wasn't working and you needed to press CTRL + whatever to quit the program since the buffer was full and unable to accept the CTRL + whatever. Instead it had to be CTRL + ALT + DEL. Three decades later I learn that there were utilities to make the keyboard buffer bigger. But, in those days before search engines, how was I to know?