Some facts about the 3IBM 3270:
- The keyboard was the size of a C64
- Keyboard click volume was adjusted by a mechanical knob at the bottom
- also in the keyboard was a flap for the miniature users guide
- the lock was easy to disable by removing a side cover and pulling one wire from the lock. (A tea spoon being the only tool needed for the job)
- The display had 24 usable lines and 80 columns
- Screen attributes (i.e. bright, underlined, input field, blink) would take one character on the screen.
- Early versions were only able to display upper case characters, with no national character set (except for US) support.
- The retail price in the mid-70s was comparable to the price of a compact car. The VW Beetle was less expensive.
- sending one screen or one line at a time (instead of one character) saved a huge amount of processing power.
- scrolling was not implemented.