Early membrane keyboards limited typing speed because they had to do significant debouncing.

Fast typing is simply not possible on the membrane keyboard but whether in spite of or because of this there are several word processing programs available!

Both have flat membrane keyboards; the one on the T150 is a bit hard to use.

It had a U880 processor (a Z80 clone) and a membrane keyboard.

Speak & Read units used a membrane keyboard for input.

Typically they are completely sealed in rubber, making them watertight like membrane keyboards.

The machine had no moving parts - not even a power switch - and used a pressure-sensitive membrane keyboard for manual input.

The front part of the case is occupied by an integrated 40-key membrane keyboard displaying 20 graphic and 54 inverse video characters.

Water-resistant membrane keyboard, customized to the locale in which it will be distributed.

The machine uses a membrane keyboard, which is almost silent in use; an optional electronic "click" can be turned on to indicate keystrokes.